Depending on the type of men you like, there are certain studios where nipple play are almost always present. HardBritLads for example has nipple play in most of their vids. IronHorse is also generous with that, but the actors aren't hunk/jock type, more daddy/bear type. Also, in most cases it's actor dependent. There are actors who genuinely love and looking to have some nips action like Zak Spears and York Powers for example. I am the same like you, nipple worship is a must in my porn, but I'd rather have no nip action in a scene than a half assed forced scene where you can see the actors looking uncomfortable, or worse: straight faced.
Anyway, my all time favorite nips worship-heavy scene is from Falcon's Hungary Men back in 2000. I never watched something as erotic as that back then. The way the guy was so hungry for the other guy's body and gave him a tongue bath basically, and the other guy made that ooh ahh face. Never gets old.
Here's a clip:
View attachment HUNGARY MEN.mp4