Okay but let me make a quiet!OC/Gojo headcanon no one asked for.
OC being quiet person while Gojo is like an animal living in jungle (aka. loud af). Gojo loves sweets while OC prefer savory foods. OC is pretty humble while Gojo is, being Gojo. Exorcising methods they use also different: Gojo more like an offensive battle while OC does what Shinto priest(ess) does - praying or maybe even using fire to purify curses (? Cmiiw idk anything about Shinto).
They hardly have many fights tho, bcs they have mutual understanding and compassion for each other even with all their difference. Thankfully they also share common goals and beliefs (as in what they're standing for, not just exclusively about religion or spirituality). More of fluff team than sensual team bcs OC feel uncomfortable doing so.
But the most outstanding thing is Gojo tries to give warm feeling to OC when it's cold but the person who is actually lending their scarf / coat is OC, making Gojo blushed. Everyone calling him a loser after that because he's not being gentleman enough. And for the first time ever he actually admit that he could be better for his s/o.
Oh yeah quiet OC supremacy.