I have listened to Leather Teeth quiet a lot over the past months... love the cheesy hairmetal influences...
The king of this stuff will always be Legowelt, he isn't exactly "Synthwave", but he is doing 70s and 80s style straight forward synth music since like 1999 and has a super prolific output under like 12 different names and styles... he is a top 3 artist of mine I think
(these track are like 15 years old now I guess)
The dude still uses a Amiga 600 in his studio, so that's enough reason to love him
I only recently discovered this genre, but I've come to really enjoy artists like Carpenter Brut, Dance with the Dead, and (in particular) DEADLIFE:
I'll be keeping a close eye on this thread for more recommendations.