But today I'd like to point out one of my favorite (relatively recent) finds: SuperDeepthroat. Ostensibly one could argue that it's about objectifying women and being a deepthroating simulator. But for an imaginative sissy it's just another avenue for practicing her cocksucking. Perhaps it would be better as SissyDeepthroat.
Since you can do your sissy's make-up and pick her clothes and even her skin and outfit colors you can ostensibly build a digital version of your emerging sissy form. She just happens to start on her knees with someone's hands on the back of her head...