In this short article summarizing a recent PHEV study, the terms parallel hybrid, series hybrid, and combined hybrid plug-in electric vehicles are mentioned. What are examples of each type? Plug In Hybrid Electric Vehicles Market is projected to increment at an eye-catching CAGR of 13.4% during the forecast period of 2017 to 2022 – New Daily Herald
The "types by design" section here has some good diagrams and examples Hybrid vehicle drivetrain - Wikipedia
Type doesn't take into consideration other factors of operation, like electric heating and highway EV.
The combined is better known as a power-split or series-parallel; this is the system the Prius Prime uses. The Ioniq and Niro are parallel. The i3 REx is a series. The system in the Clarity is series at low speeds. At higher speeds, the engine can drive the wheels through a single speed transmission.
