I feel like shotas in anime already start on Lest Buster, first day on the job.
Only ExcessM tbf.
78's shotas usually get to maledom from time to time. His games have like 50% female assertive, 50% male aggressive. That's saying something considering he also includes foreplay. Whenever it's male assertive it's always just sex though.
haamuhaamu's game (where did these guys go?) has mostly maledom in the main scenario. In the combat scenario it's 7/10 female assertive.
ExcessM is pretty unique in the kind of adult stuff he draws. I think he MUCH prefers foreplay to actual sex. Some of his manga have no sex in them at all. Just rubbing while the girls still have their clothes on. When he draws sex though 99 times out of a 100 the girl's going to be in the lead. Even in Parade Buster, where the heroine was the most passive thing on the planet, their love scene was still her riding the dick (probably so he could reuse an animation though.)
I don't think I've found a creator who likes to mainly draw the kind of content that appeals to me. They usually just draw that stuff alongside of what they like. The creator of SHRIFT was close, but he doesn't actually care about showing where the action is. The way he draws, he focuses on the situation which is why you can get some scenes like Nina which is kind of boring to look at, until you get context for the kind of scene it is.