OHH Yes definitely
The one you listed is one I used to believe too. It was like way back when I first got into milgram, I thought she killed one of her clients. I still thought she had an abortion because like, there's way too much evidence for it NOT to be an abortion. But I thought they would touch more on her clients in t2 (which like. they did in a way)
This next one isnt one I believed at all but when I heard about it I thought it was a cool idea, the theory that all the prisoners are from different time periods! I already spoke on why I think it isn't true but i still LOVE the idea of it; the idea of the prisoners existing as an anachronism to milgram. i think vice versa is true though.
one i believed for a MOMENT and immediately doubled back on is the theory that muu's murder was an accident. ive been a big denier that both fuuta and muu's crimes were 100% not an accident in ALMOST any capacity but I did start believing muu's could be because of that damn shoe they keep adding to so many of her official arts. the shoe was even an outlined part of the rough animation in inmf, it wasnt part of the bg😭!!! they want us to see it but I just can't believe that it was an accident because so much wouldnt make sense