Help! 32 weeks and no name for our baby girl.

We had a name picked out since we found out the gender. and some people said it didn't fit with our last name. We wanted to name our girl Annabelle, but our last name is Ellis. They said it sounded off, Annabelle Ellis.

We have been struggling to come up with a name that my husband and I both like. We both love Olivia, however my sister has already claimed the name and been talking about their future kids, they have two now and possibly want 4 and are currently ttc. Even today said their future daughters stocking will have an O on it for Olivia. She knows it's in our top five list now. and we had it on our top five list for our son if he had been a girl, but we didn't share names with any family before he was born. I know she loves it too, but I feel it's kind of bad she's laid claim to the name not being pregnant and knowing we're having a girl and like the name too. She said we could use it a while ago bc she doesn't even know if they'll be able to have more kids or if they'll have another girl, but I feel like she'd use it against us if we picked it.

The names were currently debating are: Chloe, Ava, Isla, and Isabelle(however same issue as Annabelle but my husband is kind of like it doesn't matter how it sounds now, but it bothers me) I'm really at a loss and not sure what to do. I'm dialated to almost 2cm and 70% effaced, and the doctors are concerned I could have her anytime. If anyone has an input or other similar name suggestions we would really appreciate it. I'm panicking now that we don't have a name.