In-canon 5* Character Power Ranking

It is difficult. Wanda for example probably ranks low on most categories but she has a potentially cosmic level super ability which makes everything else irrelevant. She is a planetary threat and might even be a multiverse level threat based on her evolution in the MCU. It would be the same if we had the Molecule Man - he would rank low because he is just a human but his super power puts him at god levels of threat. He can literally disintegrate Mjolnir and Cap's shield with a single thought and like Wanda he can reshape reality to his whim. So these rankings don't really help in such cases.