I asked u first, bc u said it first, but I’m pretty sure Base Jiraiya ~ Oro who jus >>>>> deidara
This prob not good evidence, but Itachi told Kisame to not fight Jiraiya, knowing how good he is. Nd idk if this is canon or not, but Itachi one shotted Deidara when they first met.
Or you could say Itachi > BOS Sasuke > Deidara, and Jiraiya > Itachi