CMOS

https://en.wikipedia.org/wiki/CMOS:

Complementary Metal Oxide Semiconductor (CMOS) is a type of MOSFET fabrication process that uses complementary and symmetrical pairs of p-type and n-type MOSFETs to build logic functions.

It is low powered compared to NMOS.

Here is a CMOS inverter showing the complementary N and P type MOSFETs.

And here’s how it could be laid out using a tool like Magic