Most definitely. You have Hannah Barbera, which is said to reside outside of the 52 universes, right? Just more to be explored.
Speaking of Hannah Barbera, DC is having another crossover with them in May.
Figured I may as well bump this.
In the Justice League Annual (2019), DC's Omniverse is stated to consist of "infinite multiverses":
https://i.imgur.com/Hv5aVkn.jpg
Figured I may as well put this here as well...
You just have to start at the center of the Map and work outward to get a grasp of DC's dimensional superstructure:
https://i.imgur.com/1AxV2FZ.jpg
*The 3rd dimension = the prime DC omniverse(the innermost sphere of the Map), where 99% of the stories in DC take place... And yes, DC IS an omniverse that is comprised of infinite multiverses:
https://i.imgur.com/Hv5aVkn.jpg
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*At the outer rim of the 3rd dimension(but still below the New God Realm) sits Wonderworld. Although it's not technically in another dimension, it still rests above the 3rd dimension, and as such we see that even here scale and perception become drastically altered:
https://i.imgur.com/Yxd2SOp.jpg
https://i.imgur.com/hGcspZK.jpg
https://i.imgur.com/YS39d2o.jpg
https://i.imgur.com/lsPzBx8.jpg
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*The New God Realm(the "Sphere of the Gods"😉 is a dimensional plane above the 3rd dimension, but it doesn't necessarily have a numerical designation. As mentioned above- even from the perspective of this Realm, all universes in DC's prime omniverse exist as infinitesimal bubbles:
https://i.imgur.com/3FQRGnB.jpg
https://i.imgur.com/3HiPnGS.jpg
https://i.imgur.com/HLPSvNo.jpg
It being called the "Fourth World" has absolutely no bearing on its dimensional designation. That is just referencing the specific age/era/incarnation of the New Gods at any given time. For example, the Third World Gods existed before them, and the Fifth World Gods came after. Same dimension; different iterations of the characters. At this level things start getting a bit metatextual.
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*Then we have the Limbo Realm, which is a dimensional plane above the New God Realm. This is where all the unused characters/stories in DC reside and wait to be recycled. This is also where the infinite Book of Limbo(the Book with infinite knowledge) is kept:
https://i.imgur.com/dGLhLQa.jpg
https://i.imgur.com/fr9R0jL.jpg
https://i.imgur.com/AHleup5.jpg
https://i.imgur.com/AQnZiTV.jpg
https://i.imgur.com/r5BrH45.jpg
This Realm is primarily metatextual.
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*Next is the Monitor Realm. From a numerical standpoint, this is the 4th dimension... And the 4th dimension IS time itself(literally.) At this scale the entire DC infinitude(inc. the Limbo and New God Realms) becomes utterly infinitesimal by comparison:
https://i.imgur.com/pgmy7p2.jpg
https://i.imgur.com/DjYvvkT.jpg
https://i.imgur.com/iYKMprn.jpg
https://i.imgur.com/ItuUNp0.jpg
That's why Monitors refer to the whole of creation as the "GERM world" -- in this case "germ" is being used as a literal analogy/size comparison. The Monitor Realm is primarily metatextual as well; comprised of highly advanced thought-forms and pure narrative made manifest.
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*And beneath the proper multiverse sits the Dark Multiverse: a literal dark reflection of the prime creation. It is defined as "a Realm much older and much vaster than ours. An oceanic, subconscious Realm our tiny multiverse floats on":
https://i.imgur.com/ZQXKej9.jpg
https://i.imgur.com/KQv5YBW.jpg
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*Then we have the 5th dimension, which transcends the Map entirely. The 5th dimension is quite literally the very imagination from which the entirety of creation/comic books are spawned, and as such it exists outside of time. It encompasses everything at once -- existing backward and forward simultaneously:
https://i.imgur.com/COyjI9V.jpg
https://i.imgur.com/SEDTgpG.jpg
Suffice to say, the 5th dimension purely metatextual.
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*Next up is the newly defined 6th dimension. This Realm exists beyond even imagination itself, and acts as the "multiverse's control room" -- it is where the whole of creation was designed and set in motion:
https://i.imgur.com/apQCgF7.jpg
I have absolutely no doubt that this Realm will be entirely metatextual as well... How else could it exist independent from the concept of imagination, lol?
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*And finally we have the Primal Monitor/Overvoid. An essence so vast that absolutely everything in DC(inc. the Monitor, Limbo, and New God Realms) is literally the size of a microbe in comparison to it:
https://i.imgur.com/pade1Z0.jpg
https://i.imgur.com/DkPYytC.jpg
https://i.imgur.com/4wfTlpZ.jpg
As you might guess, it is wholly metatextual as well, as it embodies the 'blank pages' onto which comic books are printed. Characters who can actually grasp what the PM represents become fully aware of their conceptual purpose(ie. that they are just characters in a story that someone else is creating), and can actually perceive the "faces staring down at them"(ie. people reading the comics in the real world):
https://i.imgur.com/ToyiJ43.jpg
https://i.imgur.com/b6Bi81z.jpg
https://i.imgur.com/Q9WaabZ.jpg
https://i.imgur.com/pz5EjI0.jpg
If a character fails to comprehend the PM/Overvoid when they are exposed directly to it, they are unmade at a conceptual level -- until even the very idea of them is lost:
https://i.imgur.com/VXniifs.jpg
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*And while DC does have an infinite number of dimensions in between:
https://i.imgur.com/5rgiWrd.jpg
...The above Realms are unequivocally the primary/superior dimensions in current DC. Don't fixate solely on numerical designations, as they don't mean much after a certain point.
