I'm not sure how to quote the Reddit forum, but someone did ask about Wondy's classic villains, and the creators' answers are below. I noticed Conrad made a particular mention of the "Dr." villains, so I'm hoping Psycho, Poison, and Cyber make an appearance or preferably several.
Cloonan also says that a few familiar villainous faces will show up in the God Sphere although more will show up once that particular storyline has concluded. Both are copy and pasted below. Also, just because I know a lot of people here care; they said that while Diana will start off as more "warrior" in their run, they are gunning for the balance of diplomat/warrior that is important to the uniqueness of the character and her mission.
level 2
michaelwconrad
3 hours ago
Yes! I love the classic rogues gallery, especially the ones with Doctor in the name! Yes we will use some of them!
beckycloonan
3 hours ago
Hello! Thank you so much! Issue 2 of IWW is one of the proudest I‘ve ever been about working on a comic, can’t wait for you to read it!
Villains have been a big point of discussion for us- I always believe that having a solid villain helps to define a hero in so many nuanced ways that would be impossible otherwise. We start out in the Sphere of the Gods so we’ve got a few new characters I hope you’ll like, but we have a lot of big stuff planned for her rogues gallery after that so hold on tight!!
I think you’ll be stoked. (Edited to add that we’ll definitely be seeing a few familiar faces in the Sphere of the Gods too... heh)