Sadly 95% of the shows are just computers with a pre-loaded playlist. Still fun to know though that you are listening with a lot of other people together.

The shows don't really exist anymore. At least not in my area. Well over a decade ago they were all replaced by playlists and commercials.

You could check out NTS Radio - so many shows from a very wide variety of genres, and they have an archive of every episode

Only a couple of the final pod nanos had built-in radio, the other iPods all required additional hardware to be plugged in. I found that the hard way with an iPod classic... Even my shitty flip phone had built-in radio with an earpiece connected lol.

Uh, no. It entirely depends on the station. My wife has radio stations in her car that sound almost 100% prerecorded and edited together - I can never tell if someone is actually talking now or if it's just a snippet from a previous recording. However, if I listen to a very specific radio station from my home country, which I can only get via internet stream, it still feels like listening to the radio. The way of listening has nothing to do with it, it's all in the station's programming.