Physics Assets & Skeletons referenced by the skeletal mesh will load materials & textures from their default skeletal meshes into the statistics window. Either the statistics window is incorrect about which textures are actually loaded, or the Statistics window is correct and we are loading textures that are not used.
This was reported and tested in 4.22.1 (CL-6063286). This was reproduced in 4.21.2 (CL-4753647) and Main 4.23 (CL-6191074)
Results: Observe that the textures from the first skeletal mesh are present, despite only the second skeletal mesh existing in the scene.
Expected: Only textures that are used by the materials assigned to the skeletal mesh in the scene should loaded. The skeleton's default skeletal mesh & physics assets do not need to load materials & textures.
There's no existing public thread on this issue, so head over toAnswerHub just mention UE-74055 in the post.