There's more than just CVT transmissions that support hybrid deployment though. LMDh prototypes combine the hybrid + ICE power output with a torque limit at the rear wheels to restrict ultimate output (roughly 500 HP) and allowing the hybrid deployment to reduce fuel usage of the ICE (which then, for balancing purposes, the fuel tank stops being measured in Litres/KG, but energy output across a stint.
There's also LMH cars which when equipped with hybrid, deploys from the front wheels but only above a certain speed (which in some cars, the ICE proceeds to reduce its operation to conserve fuel) as the power output between both ICE + Hybrid is still restricted to a certain number (roughly 500HP, BOP purposes can +/- that number)
Personally having "race" hybrids is more interesting than road car hybrid implementations.