There are really only 3 major variations.Mild Hybrid
Normal Hybrid
Regular Hybrid
Self Charging Hybrid
Plug in Hybrid
Regenerative Hybrid
E Power Hybrid
Etc
Amazing the number of Hybrids. Mind boggling 😜😜
Mild - the electrification is a boost and cannot drive the car alone. Fossil fuel only. Engine has to be running to move.
Regular/ normal / “self-charging - yuk” - has an electric drive train that can run without the ICE being started. Fossil fuel only.
Plug-in hybrid (PHEV) - As above but has a plug that allows the battery to be directly charged from the grid. Can in theory be run indefinitely on electricity alone. Electricity and Fossil fuel.
The Ampera, i3 rex, Outlander, Volvo Twin-engines are all PHEV.
The Nissan is a normal hybrid (fossil fuel only, can run on electric drive from the battery).