When I think about great synthwave music Gunship always comes first in my mind. From the catchy hooks, the production, the art, the great collabs, the music videos. go listen to them!!!
He's the one that made me compose synthwave in the first place with song like Nightcall and Pacific Coast highway. kavinsky is the man go check him out!
Karl Casey is a recent find for me, he actually wrote an awsome guitar solo for me. I went to check is work and im really surprise this guy isnt famous yet. His stuff is pristine. Go check him out.