I just "know" one of them, the one from Exam Days, the Slave Auction and Autumn Term. He appeared also on FirstAuditons/CastingRoom as "Neil".
Here's a zip with his Auditon, as well as the video from Autumn Term. Password: lpsgCFNM
I suggest to have a look at castingroom.com for the others, usually they have castings of the cfnm site there.