Some Plaid styled cloth I created over at https://www.gametextures.com/.
The designs themselves were rather simple, my coworker Matt Dirks over there gave me a lot of guidance in how to set up the thread pattern itself, made the material for sure. (the initial way I had it looked perfectly fine it just broke badly scaling on any direction)
Applying the needed nodes to get the dark lines to bracket was another bit of genius from him that really helped.
This material has settings for grunge, stains and dust. You can also set the pattern to any number of lines and all of the patterns have their own color pickers.