The thing that most does it in porn for me (even more than looks) is what I call the "ultra erotic girls": girls that can do two things
1.-convince me they really really really *NEED* to get fucked (looking for both straight/lesbian scenes/performers)
2- the can get their partner really really *really* horny to the point they lose their minds

This is not so much "dirty" or "extreme" girls (say, Adrianna Chechick) but more of an erotic/sensual thing

Things I find that really set that performance.

1- good maintained eye contact, bonus points for submissive puppy eyes begging for a fuck, with good dirty talk.
2- start/stop/start style: intense fucking and then a slowdown where the girl teases her partner (girl or boy) until they go crazy and resume intense fucking. For example, slowly removing panties/underwear with her mouth, rubbing the guys cock on her pussy lips until he looses it and just crams it in her, barely licking the other girl around her pussy lips until she can't take in anymore and shoves her face into the pussy, etc.
3- in scenes with guys and girls, sexy cum play after the nut, showing us that she not only enjoys the fuck, she enjoys the cum too!

Starts that consistently perform this way (for example)

Rent lacroix (her submissive eye contacts, specially when waiting for the cumshot, is just amazing!)
Aidra fox (she can do no wrong!)
Madison ivy (love how she uses her body to beg for dick. also her cum play is spot on!)
Romi rain is a great example of a girl that knows how to get her man/girl horny.

What examples of recent scenes (looking hor HD or UHD) or performers can you guys give me? I'm thinking of both lesbian, straight, or BGG scenes/performers, everything is allowed!