Generalisations of AdS/CFT with string theory on both sides

Generalisations of AdS/CFT with string theory on both sides

From my previous post, I found out from the comments that there are
various generalisations of AdS/CFT with different things replacing the CFT
on the RHS; such as AdS/CMT, AdS/QCD, and also with the AdS replaced on
the LHS, like Kerr/CFT a hydrodynamic dual, etc.
I am thus led to ask, "Is there a generalisation of AdS/CFT with string
theories on both sides?"
I can think of at least 1 example of a/n (holographic?) equivalence
between a $D$ - dimensional string theory and a $D+1$ - dimensional string
theory, T-Duality. E.g. the Type I String Theory and the Type I' String
Theory, etc.
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