I will try to explain both powers according to my knowledge, you know, Evey power here based on one user, you watch anime (TV series, movies or read manga/book/light novel or play game ...etc) and see cool superpower and then you create new entry for it in this wiki based on the power of that user, Meta Transcendence based on "Featherine Augustus Aurora".
For those that aren't familiar with Featherine she is from series called Umineko (when they cry) and she is a very powerful being.
I'll try to give a Simplified layman's terms of the cosmology and the infinite hierarchy abyss:
The Infinite Hierarchical Abyss:
just imagine power level from 1 -to- Infinite, where 1 is powerless and Infinite the level of god, in her world she transcended the realm of witches and reached the realm of the Creator, but she only touched the last boundary. Anyone who actually becomes part of the Creator is completely erased, due to loss of all restrictions, including life, death, and meaning. and that where the limitation (Limits being self-defining, users are likely to hold back a lot to preserve their sense of self and meaning.) came from.
Featherine is powerful and due to essentially touching the barest portion of the Creator's realm/true self, but not fully entering so as not to be consumed by it. Featherine is still limited by a sense of self, which one loses when they become part of the "Creator". Since you are no longer you, but merely another part of something that is 0. This sense of meaning stops her from being completely omnipotent, omnipresent and omniscient.
All who join the creator and Transcendence eveything are erased and become true limitless|Boundless https://i.imgur.com/teWi6Xi.jpg
Eternal Transcendence you will walk that infinite hierarchy step by step for Eternity to reach the Creator domain.
so it's up to you, do you like the journey to the last step and like to spend your time (Eternal Transcendence) or do you want to jump immediately to the last step without spend Eternity (Meta_Transcendence)
Both lead to the same destinastion and both at the last step you will need lose your individuality to be limitless
with the down side being that you can't transcend all limitation.
That not entirely true, as you reach the last level/step you will transcend all limitation.