Every character I love is always the most shippable person in the series/movie. It's no different with Zane.
Zanvis (Zane x Travis) is Golden Retriever x Black Cat. Travis is loud, emotional, affectionate, and impulsive. Zane is dry, reserved, and sarcastic. The contrast practically writes itself.
Zana / ZaneChan (Zane x KawaiiChan) is Also Golden Retriever x Black Cat, but softer. KC brings out Zane's gentler side in a way Travis doesn't.
Zaron (Zane x Aaron) is Secretly Sweet x Secretly Sweet. Two people who act stoic but care way more than they admit. A relationship built on quiet understanding.
Zaronmau (Zane x Aaron x Aphmau) The trio dynamic is ridiculously strong because Aphmau bridges the gap between the boys. Aaron and Zane both have completely different relationships with her, and she knows how to pull both of them out of their shells.
Zaurence (Zane x Laurence) → Smart x Smart, but in different ways. Laurence is socially intelligent and charismatic; Zane is analytical and observant. Lots of banter potential.
Zeony (Zane x Teony) another Smart x Smart pairing, but with more academic energy. They'd absolutely be the couple correcting each other's work while secretly enjoying it.
Zene (Zane x Gene) is Enemies to Lovers. The tension is already built in. Half the appeal is watching them argue.
Zanlyn/Kane (Zane x Katelyn) is Competitive Lovers. Neither wants to lose. Everything becomes a challenge.
Zim (Zane x Kim) is pure cute factor. Kim's friendliness balances Zane's awkwardness surprisingly well.