Some years ago I took a lot of what could be called similar, (bamboo in various uses, stone patterns, interior decor patterns, natural things that could be used as a background) and I files them under the heading of "Textures" which only really described some of them, so I will be interested to hear a better group title
To me they are probably a bit too varied to be grouped as a genre, ans individually they could possibly be assigned to other genres.
Hope I understood the question