The 1 m2 chip is more powerful.
The 2 M2 chip will apparently be the first Apple chip to upgrade to TSMC's 3nm process and skip 4nm altogether. The M2 is believed to be Apple's first custom ARMv9 processor.
3 Apple is said to be working on it. The final SoC of the M1 series. It is characterized by an upgrade of the kernel structure. The M1, M1 Pro, M1 Max and M1 Ultra chips use energy efficient. Icestorm" Kernel and high-performance " Firestorm" Core - just like the A14 Bionic chip.