Google doesn't help
You could install the version in the launch and then copy the textures out of the installed files.
I used Google for a moment:
https://www.curseforge.com/...me-version
Thank you! I found so much junk but nothing useful and you will find the right one in a short time… XD
Googling properly is an art!
What have you entered?
"minecraft texture pack templates"
I see. I entered "minecraft default texturepack 1.16"