Regarding corruption, I simply tried to get everyone pregnant at the earliest chance, without caring about corruption at all.

There are, of course, other possibilities for almost every main character, especially those not on birth control.
Nice catch about Mrs. Maywood: I know about the hotel, but I picked Lydia instead. You can of course impregnate her at the hotel as you said, and then pay Lydia with the green light at Stein's first lesson with the same results, minus the corruption.
I didn't know about the blue light in Patel's first class, I never actually used it. Amazing how this game still has a few surprises