Apple got it right with the original iPod, and your ask, and others, is just to extend it to modern times. A lot of these comments simply aren't helpful, and people chiming in know it. For me, I was looking for
1) Music player that holds a ton of songs.
2) Lossless.
3) No touch screen control.
4) Battery that is long lasting and semi-replaceable.
5) Smaller than modern phones.
6) Great software experience, which for me meant Apple Music compatible.
7) Wired. Not Bluetooth.
A $400 Sony Android-based player doesn't meet 3, 4, nor 5. Most importantly, $400 for a product that doesn't meet some pretty important criteria is ridiculous. A shitty tiny Chinese player isn't going to meet 3, 4, 6 and it'll die on you in a couple of years and you'll be back at square one.
My solution was to buy a 5.5 Gen iPod off eBay ($100), a microSD card carrier (iFlash.xyz - $40), and four microSD cards (Back in my day, $50 each for 256gb). Yes, I had to open the iPod, but yes, it checks all my boxes. And it came in less than the Sony player.