I had a quick idea while I was sick!
Find the top couple of users on the forums, and find their first post! Sorry if you don’t want this dredged up 
Sarge
Windows Vista 1.8.1 - #4 by Sarge?
randomuser
Help and Questions - #28 by randomuser?
PixelDoodle
https://makecode.com/_cer2Hpgqe7hY?
richard
How about that pxt-arcade??
Luke
Chunk-based tilemap generating. (closed) - #2 by Luke
Sorry ChimbroDaPro and others, I ran out of time.
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