what kind of music were guys who were making nü metal in the late 90s making in the 50s. or did this kind of guy simply not exist yet.

You’re looking for Dick Dale

https://m.youtube.com/watch?v=mKpsuGMeqHI&pp=ygUJRGljayBkYWxl

icebreaker.xyz/0xen |
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Worldbuilding /starholder |

DAOs: The LAO & Flamingo

yeah that might be the closest so far although technically that was the 60s

I can also tell you what this type of guy sounded like in 1972. You need to find a bad version of Bo Diddley for the 50s

https://m.youtube.com/watch?v=Pb605jAQUlk

Ha ha. How about Johnny and Edgar back in 1959?

https://m.youtube.com/watch?v=rqxxTw_rmoE&pp=ygUWSm9obm55IGFuZCB0aGUgamFtbWVycw%3D%3D

put some respect on edgar winter's name. 70s version was like Nazareth, Styx or Scorpions