I think I found Johnny Silverhand's real name (SPOILER)!

[Vendrean]

It's on his ripperdoc's scanner screen.

 

[gregski]

Yup, it's his real name in Cyberpunk lore: https://cyberpunk.fandom.com/wiki/Johnny_Silverhand

 

[Don_the_brawler]

Johnny is from College Station in Texas? Ha! That's less than an hour and a half away from where I live. Interesting...

 

[Vendrean]

I like a lot that it's in the game and well hidden.
Really love the details in general.

 

[Hrazmadul]

His real name is also on the graveyard niche next to Alt Cunningham.
Some info and possible spoilers on the wiki page

North Oak Columbarium

The North Oak Columbarium[1] is located on the southern hills of North Oak, in the Westbrook district of northeastern Night City. It is a large series of columbarium structures containing the cremated remains of thousands of local residents. The columbarium was built after cremation became...

cyberpunk.fandom.com