@rnd256 Not sure if you're focusing on just "Straight guys" but there is a studio called "Broke Straight Boys". I believe the guys were gay for pay and used to be quite believable that they were straight whilst being paid to have sex with another guy.
They have featured some guys who have gone onto other gay studios though so no idea if they are actually "Straight". It's hard to tell these days because actors like "Elliot Finn" are on tiktok telling his audience that he's straight but ends up bottoming for scenes from the studio MEN.
Unfortunately, I don't have any experience on Guy on Girl action with the focus mainly on the guy, just guy on guy action. Hope this helps anyway.