All my games made with Ren'Py are mostly accessible but I haven't tested them extensively; Lifelong Dream is just hypertext so it should be 100% accessible; Ciao Nonna is a Gameboy game hence completely inaccessible as far as I know.
Please note that there hasn't been any extra thought put into most of them (older games probably won't have all buttons labeled), but they're also all free besides Toumayhem so you can have a go at them yourself