Daughter has a name I don’t like

Looking for advice on how to move forward.

Back Story - At the time my daughter was born my partner didn’t like any of the names I suggested and was pushing me to name her quickly for various reasons(worried about what his family would think, wanted to get her a passport). I wanted to take my time as we had only planned at that point to have one child. As a result of pressure and bad attitude from him I caved and we gave her a name that I don’t like and don’t feel suits her.

The name we gave is Annabelle which was his first choice. I don’t like any variation of Anna and my sisters nickname is Belle meaning my daughter is stuck with a very long name that has no nickname and imo is very frilly, cumbersome and formal. I feel the name is also a bit “Deep South” (I’m not American though so could be wrong) and see it as a cow name.

Annabelle is almost 3 now and is vivacious and cheeky, very physical and outgoing. She still can’t say her long name properly. She loves robots, dolls, dinosaurs and cupcakes. Definitely not a “girly girl”.

We are also expecting a second baby girl. We are running into the same problem where the names I suggest (Lucy, Florence are examples) are “too hard to say” and he doesn’t like anything. I err toward shorter names and having a nickname is very important to me.

The problem - Beyond all the obvious problems here, the other problem is that I wanted some harmony between the two girls names so that they sort of work together when introduced. Because I already don’t like Annabelle I’m having trouble finding a name for the second child that works together and doesn’t make me feel like one daughter got a “better” name than the first. I know any name I give my second daughter will most likely be “better” because I will actually like it and ensure it has a nickname. I keep coming back to my dislike of the name Annabelle and 3 years later it hasn’t grown on me at all.

How would you move forward in this situation?