Wow .... some really good domain names! These in particular have a ton of potential ...

GAYRIMMERS.COM
ANALRAW.COM - bareback of course
DADDYWANTSCOCK.COM - leather, bdsm
DADDYWANTSTWINKS.COM - older/younger niche
GAYCOCKDOCKERS.COM --- I can see that going up as a foreskin site
AMATEURGAYSTUDS.COM --- boy next door - self shot - ex bf

Good luck!