The vast majority of straight male studs have been in gay/bi/trans scenes. It's just the way it is. It doesn't look good that no 100% straight men don't make straight porn. What gives?
The list is long. Even Ron Jeremy did a scene with a transwoman.
The only straight stud I know that didn't make any gay/bi/trans scene is Colt Steele. The dude seemed very homophobic back in the day.