Carpet Material Generator - Substance Designer
Built-in carpet options as well as optional image input.
Height difference option for default carpet material where custom height map can be plugged in as well.
Normal blend option where custom map can be plugged in as well.
Optional carpet side and ending. Two options for carpet ending.
With a lot more exposed parameters.
Purchase link
https://www.artstation.com/a/10037965
Alternative purchase link
https://degi.gumroad.com/l/bWvzBu