  We study a series of powerful correspondences among new multi-gravity
extensions of the Jackiw-Teitelboim model, multi-SYK models and
multi-Schwarzian quantum mechanics, in the $\rm{(A)dS_{2}/CFT}$ arena.
Deploying a $BF$-like formulation of the model, we discuss the counting of the
degrees of freedom for some specific classes of multi-gravity potentials, and
unveil connections among a variety of apparently different models. Quantization
of multi-gravity models can be then achieved from both the Hartle-Hawking
no-boundary proposal, the SYK partition function and the spin-foam approaches.
We comment on the SYK quantization procedure, and deepen in the appendix the
quantization scheme naturally achieved in the $BF$ framework. The new
multi-gravity theory hence recovered presents intriguing applications for
analogue gravitational models developed for condensed matter physics, including
graphene, endowed with defects and high intensity magnetic fields.
