Agree. It would be wonderful if we could "Pick Library" for patterns the same way we can "Pick Library" for color fills and strokes. This is much needed so people don't have to create a new listing for every new pattern. We could instead have a dropdown of different patterns given a design. We could add several patterns to a library. For example, given a yellow background, you could choose a pattern of stripes, polka dots, plaid, etc.

This is also similar to this request which also has votes https://customily.canny.io/suggested-features/p/add-patterns-to-color-library, I believe.