[question] strongest isekai MC?

I’m barely getting into isekai (I’ve watched, like, six) and just watched Isekai Quartet. When Ainz stopped time, a few characters were still able to move around. Now, I don’t think that series is reliable in terms of how powerful it shows each character to be, but it got me wanting to write a sort of essay on which one is the most powerful.

I wanna know your picks and what anime they’re from so I can watch it. MCs only, of course.