Uh boy! that's gonna be a long list, but I can do top five for each so:

Viney:
Bros - Wolf Alice (her friendship with jerbo and barcus is very precious to me)
Cool Kids - echosmith (same reason)
Caring Is Creepy - The Shins (me summarizing her attachment issues)
Would That I - Hozier (very Viney core, she's so free and raw an unapologetic, a hozier song)
Not Gonna Kill You - Angel Olsen (also viney core, very hopeful honest and loving)

Emira:
Rhiannon - Fleetwood Mac (I have this headcanon were emira was seen as an unreachable girl in hexside sooo yes)
Bad Reputation - Joan Jett (very careless and bratty emira s1)
Nomad - Clairo (baby girl wish to leave everything behind but in an unhealthy way/isolation just so she can give up her responsibilities).
curious/furious - WILLOW (emira embracing her rage hut having hope why not)
Dog Days Are Over - Florence + The Machine (she finally leaving the past behind but now in a healthy way and finally embracing her freedom without resentment or guilt).

Vinira:
What Is What - Interpol (them getting over the distrust and having mixed signals, basically breaking each other walls now that the know each other more)
What Once Was - Hers (let them be understanding and caring about each other struggles).
What is Gonna Be? - Shura (probably THE vinira song for me personally is just them gravitating around their feelings because they have this slow burn going on).
We Will Never Have Sex - Leith Ross (this is velvet's courtesy and ever since paw told me about this song I never stop thinking about it, and it is basically about loving in the purest ways).
Dreams - The Cranberries (their song when they finally get together, see it as a happily ever after anthem).