Heres the list btw
Lunar capital - City block+ to multi continent level
Iku Nagae - Shes above kappa because shes powerful, lives above mountains and can take some of dragon gods power. But its super vague and doesnt have much reference to their strength from what i found so im not sure here.
Giant catfish - Unknown, high 6-A with power absorption methinks
Enenra - multi continent level, powerful youkai that had to be sealed
Reisen - At least small town+, possibly multi continent?
Other Moon Rabbits - At least city block+, likely small town+, possibly multi continent (if you dont wanna scale reisen to moon level straight up)
Giant toad - Depends on whether tengu are afraid of it or not, either an outright or possibly rating
Momiji - multi continent level
Letty - At least small town possibly multi continent? The severity of the incident isnt made clear so...
Yamame - At least small town possibly multi continent
Parsee - At least small town possibly multi continent
Satori - At least small town possibly multi continent
Rin - At least small town possibly multi continent
Murasa - Maybe??? Idknowwwwww
Eternity (marvel comics) - Another possibility im unsure about since a lot of their stuff is tier 2 supportive but not quite getting them there
Seija - Big enough threat to cause everyone to gang on her so multi continent easy
Mai and
Satono - Theyre were given powers from onika but thats really all i have on them, not sure if theres much basis for meiling scaling
Shinmoumaru - Ancestors were higher. She was mainly building level to begin with due to scaling to yukaris train. But idk if theres any basis for high 6-A scaling
Kogasa,
Benben,
Yatsuhashi, and
Raiko - If raiko is reliably incredibly powerful then ill be fine with it. The other three you said you wouldnt scale super high tho?