Let's see... like, half of the Kirby music lol, especially a couple of the pieces from SSBB (Meta Knight's Revenge, Fountain of Dreams, Green Greens), although the original versions are also pretty good. The Last Array, from Destiny (1). Can't even list all the Pokemon and Halo music lol, they were my childhood and I spent way too much time listening to the music lol. Ultra Necrozma's theme, as you mentioned, was great, and I love Gladion's theme (I never played the newest games, but the internet still supplies me with music lol). Plenty of good music in Metroid. A couple I remember in particular are Vs. Ridley and Vs. Meta Ridley (Thank you Brawl for giving me titles lol). Good music in the Mario franchise too, though nothing I've listened to a lot. His World, from the Sonic game that shall not be mentioned, is fantastic. Lots of the Castlevania music, I can't think of any names unfortunately. Oh, Undertale had a pretty great soundtrack overall too. I'm rather partial to The Farm from Destiny 2 personally. Overwatch has some good music, but everything in-game is so short that the only pieces that seem memorable are "remixes" of the pieces in game. Guile's Theme, from street fighter. I'd provide links but I think I've listed too many pieces lol. If anyone wants some links, I can edit them in.