I want to add some recommendations to the ones people gave already.
Shinsou Seiki Elementia - Magical Girl corruption as well, it's pretty simple and direct (only one route, no choices) and cliche but it scratches the itch, the art is good and the heroine's corrupted form is sexy.
On the same series there's also
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, but that one is not translated... Is what I thought but there IS a machine translation from Sugoi Visual Novels. I have not played it so I don't know the quality. Their MTLs specially the older ones are quite spotty though, so be warned.
There's also
Agent Sirius, a game I stumbled upon earlier today, and I'm liking a lot. A RPG Maker game, you play as a heroine who has to discover monsters undercover in her school corrupting the students, and if you fail in defeating them, the heroine gets corrupted instead and helps the monster who defeated her corrupt the other girls. It has several different kinds of corruption (including gyaru) but that also means each route is kinda short and underdeveloped. Still fun though. The game has an official AI translation, but (from what I've gathered from the OP post in the thread) the link here on F95 has an original GPT4 translation that came out before they did their own translation, and as far as I've played, it's spotty but understandable, probably still better than the kind of MTL DLSite puts out.