When checking the "piglin_bartering" loot table, I noticed a discrepancy in the trades available.

Only Warped Nylium is given to the player in bartering. This is unusual as both Crimson Fungi and Warped Fungi are given in bartering thus creating some minute confusion.
I believe that Crimson Nylium was intended to be available in bartering but was accidentally left out.

Attached is the "piglin_bartering" loot table file that is used in the game so you may cross-reference it.