We’ll,mtge normal terms are
MHEV, mild hybrid small battery to give a bit of a boost (such as our Aston Martin Valkyrie)
PHEV Plug in Hybrid, with both a battery and petrol engine that can be charged either through the plug or from the engine and can be powered by both battery and petrol engine
Hybrid, battery driven but charged with onboard petrol engine, only the battery is connected to the drivetrain and can’t be charged outside the the car
and BEV Battery Electric Vehicles,battery powered only