I feel like typing about the period that White's been senior editor of X-Men. It'll probably be a text-heavy, gloves on post (even if it doesn't look gloves on at a glance).
Jordan White jumped on board the X-Men franchise in the middle of X-Men Blue. There were already problems as I saw them with how Lorna was being used before White officially took over, but those problems got worse when White came along. The rest of Lorna's presence on X-Men Blue pretty much amounted to half-hearted Malice throwback and prop to build up Havok, and I quite honestly think Bunn didn't want to do it but had to.
The next couple years prior to Hickman were largely appearances that tried to "subtly" sneak in Havolaris bullshit. Things like Lorna remembering kissing Havok within Prisoner of X (but not remembering that she survived a genocide), or worrying about if he died. And a scene of Lorna and a brainwashed (or whatever it was) Magneto fighting.
When Hickman started running things, Lorna's few appearances continued in the vein of supporting character for men. Sounding board for Magneto to explain resurrection, sounding board for Cyclops to talk about his son, never anything for Lorna herself. She wasn't even included on the variant cover for X-women even though there was room for her, despite other characters like Dani Moonstar being on it. Lots of erasure on her overall history and value with the franchise. Also, Exodus got to be on the Quiet Council but not Lorna, and Lorna wasn't listed as an Omega mutant even though her father was. This matters because past comics established that Lorna was either equal to her father or had the potential to surpass him, which should have made her Omega too based on their own definition of Omega.
Havok immediately had a place on the flagship X-Men title. Lorna... didn't. She was kept out of the comics for 1 year before they announced she would be appearing... on X-Factor.
Not even as its leader. Or as an advisor/mentor while doing other things. Only as a team member on that one lone book. Interviews were not encouraging at all, either. The only thing brought up about her in them was her past relationship with Havok. Not even that Lorna and Rachel had previously worked together on Starjammers came up. By this point, it looked pretty obvious that White wanted Lorna to be treated like a washed up nobody character from 90s X-Factor whose only value came in supporting characters he respected more. It was also the point at which I started really pushing back against X-Factor coming up too much with Lorna, especially while her Genosha history keeps getting ignored. There was a clear attitude showing that Lorna's just an X-Factor character, not an X-Men franchise as a whole character, despite existing since 1968 and being the second woman to join the X-Men.
Treatment of Lorna within the stories didn't help. And I primarily blame White, because even if we say it was all Williams' doing, White still approved it. We ended up with Lorna randomly having a breakdown over Rockslide's death, even though she didn't know him and simultaneously kept getting treated like she didn't remember surviving a genocide where millions of people died all around her. The very first issue of X-Factor had Lorna claiming she didn't know who she was as her reason for being there, which always read like an excuse to ignore past work in doing random things with her. Stories got worse in terms of presenting her as if she was stupid, most notably Morrigan in Siryn's body outright calling her stupid as Lorna nonsensically confronted her without a plan. That mind control ad nauseum didn't even use the overused trope to any kind of good narrative effect. Then we ended up with Havok getting a forced mention for the billionth time with the "drunk text him" stuff, etc.
Then Trial of Magneto happened. Within the same issue of Rockslide's death before ToM, we had Magneto acting OOC verbally abusive to Lorna, and Lorna acting OOC in taking that OOC abuse. ToM ratcheted that up even higher by having Lorna OOC in accusing her father of killing Wanda and saying he was always a bad abusive dad that gets his family killed. There was a scene, singular, I've seen some point out of Lorna and Magneto standing together at the end of ToM. But it always came across to me as if the goal was to bend over backwards in forcing a rift between Lorna and her father. We'll get back to this. The only positive I'd give this period is the comics saying Lorna has a PhD, though it remains to be seen if this will be treated like an actually meaningful character development or just empty fluff substituting for actual character use. In retrospect, I also partly wonder if this was done to offset how she was being framed as "stupid" in X-Factor issues.
It was shortly before ToM that Lorna won the first fan vote for one member of the X-Men. I strongly suspect that White let Lorna be in the vote because he thought she would lose, and he could use that loss to justify his bias against the character. It also wasn't lost on me that they didn't think Havok needed to be put to a vote. And when Lorna won, White trotted out the excuse that she won because she had been a main cast character on Gifted.
Her usage in X-Men and Devil's Reign is actually the best she's been used in over a decade... though still a far cry from her potential and what she really needs. On X-Men, she got to show meaningful uses of her powers, she got to spend time with Jean as friends for the first time in decades, and surprisingly she actually got to go five seconds without a Havok mention forced into her stories. Devil's Reign also allowed her to have a unique philosophical viewpoint that played very well with Jean and Emma. However, she was only in half of the X-Men issues. Those issues didn't really touch on anything meaningful to her as a character. The Halloween issue would've been a perfect opportunity to bring up Genosha, for example, but she wasn't in it. Even the issue framed as focused on her not only didn't do anything with her history, it didn't even have her on the cover. Compare that to how Firestar got her own dedicated annual issue.
Also the coffee thing was an interesting quirk until it got heavily overused as a substitute for anything meaningful to her as a character. The prime example of why it's a problem now is how Lorna appeared on the Genosha issue of Marauders, and instead of any acknowledgment whatsoever to her experience there, all she said was that she didn't like being in a coffee desert. At this point, Lorna's Genosha history being ignored is undeniably deliberate, not an increasingly unlikely oversight. And the Marauders issue positioned the coffee gimmick as another obstacle to acknowledging what actually matters for her (Havolaris being the first obstacle, given Prisoner of X wasted a memory bubble on Lorna kissing Havok instead of remembering Genosha).
The first Hellfire Gala had another small issue of the dress and look drawn for Lorna really not fitting her at all. Out of all the designs, I think that one was the worst received. For my two cents on it, the design wouldn't have been bad if it was a random event in a random story, but it was bad as a supposed representation of the character for what was supposed to be the inception of the mutants' biggest social event ever. Over the ensuing year, some artists made tweaks that made it not as bad (e.g. her hair flowing freely, or adding gold). The second gala gave her an outfit much more fitting to her personality, history and powers, though it wasn't shown as much as the first one.
I said earlier that I'd get back to the forced rift between Lorna and Magneto. This is that part.
When Magneto died on X-Men Red, Storm got to be the exclusive torch bearer of his interests. Lorna didn't get to have any involvement or reaction at all until a whole year later, right before the latest Hellfire Gala. To me, what this says is the forced rift between Lorna and Magneto in X-Factor and Trial of Magneto happened to justify keeping Lorna out of events while Storm got to cover everything. To make this very clear, I am not saying Storm should've had nothing. Storm and Magneto did things together on Mars that gave Storm a perfect reason to take over from Magneto on those things. But since Magneto is Lorna's dad, there was no reason not to let Lorna be involved and have a reaction far sooner than a year later. It would've been an opportunity for Lorna and Storm to team up and work together positively in better hands.
Finally, we have the garbage that was the Unlimited comic. Heavily steeped in 80s and 90s nostalgia, heavier on the Havolaris trash than in the past. Still ignored Genosha and anything else meaningful post-90s. I see this as very much White going "screw it, I'm leaving soon, let's use this to push how I want people to think of this character." Whether Segura was completely in control of the script or had White (directly or indirectly) telling him where to go with it is inconsequential. White allowed it, meaning it did the things he wanted. I've said for several years that Lorna needs a mini or oneshot focused on her. I don't consider the Unlimited story as fitting that, because it didn't actually delve into who Lorna actually is and explore what really matters to her. It just trotted out some old nostalgic attitudes about her and tried to force them on everyone yet again.
We still have some time before White's out. The time between then and now will show if he's willing to actually let Lorna grow and move toward her real potential, or if he's too obsessed with his own biases and nostalgia. It can be a final impression of someone willing to do better by the characters under his purview or someone that wants to force outcomes that fit personal preferences. We'll just have to wait and see.