Even 1E technically had Intermediate Deities - they were just called Greater Deities who were not the Pantheon Heads.
I have 30* Divine Ranks, I just didn't list them all.
30 Divine Ranks sort of paralleled the 30 Challenge Ratings of the Core Rules.
*42 if we count my Hypothetical Deities.
My first 6 parallel the BECMI set, though I prefer the Hero/Quasi-deity nomenclature of AD&D. That's what D&D has largely used used since the 80's with the BECMI approach the anomaly - albeit meaning the same thing.
Notably after Greater Deity I have six extra tiers (each broken down into 4 ranks). Maybe the easiest parallel to yours is mapping your final six ranks onto my six higher tiers - rather than going one-for-one on individual ranks.
Though the reason we need those individual ranks is to promote interaction between characters/monsters - if you go up a full tier (4 ranks) its 'arguably' too big a difficulty spike. Not unbeatable, but highly improbable the PCs would defeat something +16 CR higher than them individually.