They are mostly either talk radio, religious (largely Catholic) programming, or Mexican music (for some reason).

In the Denver area where I live, there are a couple of "oldies" stations that play classic music. They're OK, but not great, basically just a bunch of shuffled songs on repeat with minimal liners.

I have one of those "Part 15" AM transmitters on my roof, but it only sends a strong signal a few blocks.

But old AM radios are a ton of fun to tinker with, listen to, etc.

Cool! 😎 In Germany, the German Museum in Munich, Bavaria has an AM station, too, I heard.
It's called "Radio Eule" (Radio Owl, since the mascot is an owl) and can be heard outside the museum, even.
Thanks to its comparably large antenna (100m long, 10W ERP, 1500KHz).

https://www.deutsches-museum.de/presse/presse … 019/radio-eule/
English Translation

There's also a video, but it's rather boring (not to say lame) I admit.
The radio museum in Cham seems to be having a more diverse programme.
Though it's not exactly my taste either I guess. I'd like to hear less (mechancolic) German folk songs and
more -uhm- Tschaikowsky or Glenn Miller Band type of music. Or Jazz, Blues etc.
Or something funny, like "mein kleiner grüner Kaktus" (my little green cactus, an ancient nonsense song). 😉

funny enough I browsed though the AM band few weeks ago in my car in London lots of foreign radio, either Indian music or non English talking few golden oldie stations and talkback, just the 1 currant music station.
But the muffled sound of AM gave that a retro feel.

and that static during a thunderstorm.
Our local AM is talk radio with a tiny bit of local news and sponsors.

San Francisco Bay area - Mainly Talk radio, sports, baseball , football, Christian, News stations, Spanish, and Art Bell Alien Abductions.