Running Wonderlands Mods
Running mods in Wonderlands is basically identical to running Borderlands 3 mods, though as of October 26, 2022, OpenHotfixLoader is the only supported method of doing so. (v1.0.2 of B3HM is still forthcoming, which will add in Wonderlands support.)
Since the information is otherwise identical between the two games, detailed information can be found on the Running BL3 Mods page.