Think you'd like Megaverse, Venom, and God's Menu. Heyday and 3Racha (3Racha is the producing line of Stray Kids) are all rap, but don't have MVs. there are color coded lyric videos available though. Stray Kids produces their own stuff and have complete creative control. While all the members contribute, 3Racha is who produces most of them. It's Bang Chan (the leader, one who almost curses, he's got 190 song credits atm), then Changbin (cowboy hat) and Han (started the video). All 8 members can sing, dance, and rap.
Tiger JK is considered the Godfather of Korean Hiphop. He contributed greatly to making the genre more mainstream in South Korea. He's been around since the 90s and he also spend his teenage years and early twenties in the States, went to UCLA and graduated with a B.A in English Creative Writing.