Allison, specifically loving path, is pretty drama free. Sure she complains about work and living with her parents again. But like... complaining about work is common in any relationship. And I would also expect grumblings about having to live with one's parents again too if forced to move back in with them.
Alison is even quite drama free in the loving path with threesome experiments if you play Ian normally and not like a loser some players here are so fond off. The Alison love paths are among the very few which do function well. Ian and Alison are longtime friends who had a crush during school, but never acted on it.
Holly isn't as bold as Cherry is initially, but she would be another hot drama free option. With the upside of being able to make her bolder. She isn't as corruptible in a loving Ian path, so Ivy can still teach her some things, she's not going to be sneaking away to the gloryhole if she is in love with Ian.
Holly is very drama free in the "vanilla" love path and equally drama free in the even more interesting "encouraged Holly" path. Ian and Ivy/Lena can encourage Holly to become bolder and she does so, but only to a certain extend. Ivy helps making her freer, but cannot corrupt her like on the wild path.
Going by the current situation (Ivy/Lena/Jess at the shooting, wild Holly more or less homeless, might move in with Ian/Perry) I think there is a good chance for an Ian/wild Holly love path. It becomes very clear on the slut Holly path that she wants a chance with Ian and if we choose event options who show sympathy and attraction for Holly, I estimate we can get Holly away from Ivy´s corrupting influence in the next Ian chapter. This would probably be the wildest version of a Holly/Ian romance compared with vanilla and encouraged Holly.