EB2

PWD Submitted 2/2017
PWD approved 5/2017
Advertisement 5-8 /2017
Perm Applied 9/2017
Perm Approved 3/2018
I 140 Applied 4/2018
I40 Premium and Lafada(RFE/NOID) approved : 08/2018

I 485 Applied 10/2018 (Couldn't do in Sept 2018 due to Retrogression)

Waiting since then:
Take home: depends on how fast the company and lawyer processes the docs something like - 2 years from PWD date)