YoannBB2 is the team member that is completely responsible for most of the pixel art found within The Bracken Pack. He has helped create textures for the Glacium items, as well as Panacea's vitality armor, and has even created a texture for every single Magic Book in the datapack.
Beyond The Bracken Pack, Yoann frequent's other datapack communities, and was responsible for some of the texture work in Incendium.
His work is now immortalized in the BP resource pack, where you can see many of his textures, some even with unique optifine-exclusive features.