I only know the gay couples hehe.
I can recommend
Slc Chunky Monkeys - they are cute and hot couple who make really great vids and collab with other guys and couples.
Carioca & Polaco - hot Polish and Brazilian couple who make long videos and sometimes with toys and other guys as well. they also don't do PPV.
Fitnessfreak_unleashed - they are actually a throuple and they make great content.