USE AI. That's it. You can post here and on other message boards and you might get good ideas, but nothing beats an AI chatbot for this kind of idea generation, or to get a sense for how a name is viewed or if two names sound good together. Some good questions to ask a chatbot:
There is no overlap in my spouse's list of names and mine. Here are the lists -- please generate names that have qualities from both lists.
Is [x name] too popular? Is it too popular in [your city]?
What are middle names that sound good with our chosen name?
Is [x name] trendy? Will it mark my kid as being born a specific year or time?
I love [x name] by my sister already used it. What are names like this I could use?
And so on.
Also, speaking of the use of LLMs and name trends, the Economist has a cool story and tool about the connotations of baby names, how they've changed over time, and what connotations parents look for now. Fun for plugging in possible names to see if the connotation the tool assigns the name matches the one you have (and to get a sense of how other people might view your kid's name).
https://www.economist.com/interactive/culture/2025/03/20/what-is-in-a-name
Good naming luck!