Baby name drama

I am currently pregnant with a baby boy and naming him is getting political AF. I’m in a bit of a unique situation. I didn’t know baby daddy well when I found out I was pregnant we’d only been dating for three months. I don’t want to paint him as dangerous or a violent let’s just say his presence was not conducive to my pregnancy and he’s not the most responsible person. Bare minimum is asking a lot kind of guy. I had a very happy pregnancy without him even though he ended up doing unforgivable things like running a smear campaign against me and saying our daughter wasn’t his. He also told me to go have a miscarriage that was fun. Before the break up, I came up with a name for a daughter that honored both sides of the family and kept it. After my due date, he reached out and long story short 4 years later we were functioning like amicably divorced people.  Both of us wanted another child and I decided to go with the devil I know.  Everything‘s been going really smoothly  until he realized he was confused ab the name I settled on. He even tried to gaslight me and tell me he had it in writing by taking a text out of context.  I’ve read a lot of pro and con lists ab whether or not to reveal the baby’s name before birth.  Anyone else that’s been through baby naming drama please share your stories and advice. This is uncharted territory for me.