I saw this particle board used for a shop interior. It doesn't look like a standard OSB, the strands are thin and some of them are curved. I wonder if there is a more specific term for this type of board.
(the board in the picture is painted)
Looks like wood fiber cement board to me
Example from https://www.architonic.com/en/product/selected-by-materials-council-wood-fibre-cement-board/1184351:
Google Image search for "wood fiber cement board" turns up many similar pictures