Originally Posted by
Primetime Harder
When Moondragon took over Thor's mind, she had the Mind Gem. And she had to put effort into it, noting his resistance. Still did it of course, because Xavier+ level telepath plus freaking Mind Gem, but the fact that she had to narrow her eyes and put in some effort says a lot.
Emma Frost also had trouble doing it while jacked up on Phoenix-skag during Avengers vs X-Men.
Exodus did mind-control a post-Phoenix Jean Grey once, briefly, along with several other X-Men, but I count that as SMvFL because of Jean's other resistance feats and the fact that was during Exodus' big "haha I'm a new character, look how powerful I am" appearance. He has shown himself consistently to be Xavier+ level with TP since that, though. I think he probably could eventually break through Thor's defenses if he tried, but the effort would also leave him vulnerable to Mjolnir shenanigans even if he's got a shield up.