Personally I wouldn’t use just ‘B’ as a middle name I actually think [name_m]Boone[/name_m] is a really cool name feels very rockstar.
I really love from your list [name_m]Ezra[/name_m], [name_m]Rhodes[/name_m], [name_m]Remy[/name_m] & [name_m]Arthur[/name_m] of all which I think sound lovely with [name_m]Boone[/name_m]. If they were options I would be selecting these.
[name_f]Hope[/name_f] this works!