I'm afraid no official master list. I operate with youtube playlists like you, but separated into genres and other labels and with stuff added with no prejudice.

Took a glance at your youtube list and found some overlap. And some unknowns. Lots of hip hop. My favorite discovery among the sounds of 2018 may be a Korean rapper called Jvcki Wai - she's been bubbling under the surface (I didn't know that then, but I've read it since) and started appearing above it last year, it seems, getting some online hits. This is one song I really like:

https://www.youtube.com/watch?v=r076sitx4AE

That's a beautiful use of autotune, to me.

This month she got a legitimate hit. A #1. With some guys, but she's bringing both the hook and the first verse (Melon tells us she gets extended songwriting credits the other guys rapping don't get).

http://www.youtube.com/watch?v=KBouh6xLbdo