For vanilla romances available to women, my favorites are Aric and Vector. I think they're well-paced, unique, and have quite a few sweet moments with the PC. Honorable mentions go to Torian for being adorable and Andronikos solely for his reunion in JUS.
I also really like the Arcann and Scourge romances, even though there isn't that much content for them yet. Scourge was criminally underused during KOTFE/KOTET, so I'm really hoping that he and Arcann keep getting more content in this expansion.