Shimobashira Workshop have produced two other games, one is translated, and the other is in progress I think, though there may be an MTL somewhere if you're willing to deal with it. The translated one is
Anthesis, which was made before Ambrosia, and while it has a very different setting, it's also a management and slow corruption game, I found it enjoyable. I have yet to play their newer game
Magical Girl Celesphonia, because I'm being patient and waiting for a complete translation, but I've heard very good things by the people that were willing to jump in to it either blind, or using MTL software.
For games produced by other people, my mind immediately leaps to the currently being made
Star Knightess Aura. It is still in progress and the dev's plans expect it to be another year or two before version 1.0 is done, but that's because he's both being realistic about his development goals, and taking his time to build an absolutely amazing and complicated corruption system. It has been getting very consistent monthly updates (or weekly if you are a Patreon). I played though his game a few months back, and while there isn't much in the way of H-scenes yet, and only some have art, the game looks to be amazing, and the limited H is because you can only corrupt her so far at the current point in the game. The art is being added in slowly as it gets commisioned. As it is right now, it's only really exciting to people that are really into the idea of truely slow burn corruption, but more will definitely be added so I recommend jumping over to that thread, reading a bit, and giving it a watch at least if it sounds like something you are interested in.