Reid and Dom are buddies, y/n? 8) Just be gentle on him with the trolling, Reid is so easy to talk circles around, and if you get another language in there.... he's toast.
If Dom likes illicit drinks and parties, he'll at least know Diego in passing! Diego would be friendly with Dom, and like his spirit. They're in outdoor exploration together.
Calvin is a little OVERWHELMED by Dom, who's handsome and has an accent and all that. If Dom's got a little steel to him, I think he and Calvin might handle one another fairly well? Particularly if Dom ever stood up for him against Sy. And Ree likes Dom, so... Calvin's going to be more inclined to soften up and be a good wingman to his buddy in her quest to land a hot blond.