Civil Service grade progression

Interested to see what other people have experienced in terms of their progression through the grades and how long it has taken - for no other reason than pure curiosity and interest!

Completely understand that it’s very subjective and also based on things like whether an individual even wants to progress (which is of course fine!), but interested nonetheless.

For e.g. I have gone from AO - HEO - SEO - Grade 7 in the space of around 4.5 years. Starting in operational delivery and going through the rest in the policy profession. Has anyone taken a similar trajectory?