In the default resource pack, when you bonemeal netherrack, often the netherrack part of the Nylium texture will not match with the original block due to the many blockstate variants of netherrack. This is due to Warped and Crimson Nylium not having variants to match netherrack.
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Their variants are contained in blockstates. Netherrack has several for different rotations. Perhaps you would call them variants rather than blockstates but they are in the same file type.
As far as I'm aware none of the three blocks use any blockstates for anything.