Is there a way to just spawn Diamond City Radios and the others using a console command? I removed Homemaker and got them back but then a bunch of other stuff I used from Homemaker is missing. Why did they remove the radios of all things?

Are you sure they're not just in another category, now? I think Homemaker and / or Ssix and similar mods sometimes create their own categories and it's possible that things got shuffled around.