On: Counting the transistors in the 8086 processor: it...

[forinti]

If they are still manufactured, which process is used?

I guess even a 65nm 8086 would be tiny.

[BirAdam → forinti]

Production of the 8086 by Intel stopped in 1998. I imagine that it may have continued by another manufacturer, but I doubt it. 8051 descendants/derivatives are manufactured, but no longer by Intel.

In general ARM and RISC-V have taken much of the low end market and microcontroller market.

[anticensor → forinti]

And lightning fast.