Zone85, gunship, Waveshaper

I'm a fan of Makeup and Vanity Set and Waveshaper.

Pilotpriest, Lazerhawk, Kavinsky is great, too

Magic Sword, VHS Dreams.

Scandroid

I really like Kavinsky's latest album Reborn, specifically the song Pulsar.

Gunship, Perturbator, Capenter Brut, Gost, Makeup and Vanity

I'm a big fan of Starcadian.

Check out Power Glove, specifically their EP 2043: Volume 1. It's a bit different to your regular synthwave, it's darker and a bit more influenced by techno.

If you like darksynth, Perturbator. His Dangerous Days album slaps.

As far as artists who primarily make synthwave:
Dance With The Dead, FM-84, Gunship, Lazerhawk, Magic Sword, and Miami Nights 1984
I'm also a big fan of Erang (he mostly makes Dungeon Synth music, but he's got a couple of synthwave albums, namely Anti Future and Songs of Scars

I like FM-84

I'm awfully partial to The Midnight - The Comeback Kid for my synth wave needs.

Obvious answer for me is the Midnight. They definitely can be a bit over the top at times.

Powercyan (RIP), Alex & Tokyo Rose, FOOL, Extra Terra, Lazerpunk, Scandroid, Isidor, NightStop, Arcade High.

Perturbator, VHS Glitch, and on the more chiptune/metal side but still synth: Master Boot Record.