Well, I have to say that Harmonoid is the best one I’ve found, it has a ton of cool features, it works and it allows you to be able to see your collection by album and it doesn’t use Electron. Right now its development has stalled a bit but it’s still pretty much in good shape, though.
Aqualung for me, but I don’t use 90% of its features. It was the first thing I found that had a good-enough GUI but didn’t try to force music library functionality on me (it has it, but it’s willing to let me leave it off and just use the directory structure I long ago optimized for the weird nature of my collection).