Best style adjustments for old man MMA?

I feel like this could be an MMAonPoint vid if its nit already. For context I thought of this because ai believe TFerg is training the opposite way he should with Goggins right now.

When I think of old vets still having success in there I think Glover is the best example, but also Daron Cruischanks is quietly hanging in there with the young bucks. Jim Miller of course.

I feel like all these guys switched focus to body clinch takedowns and methodical BJJ to get their wins now. Tell me if im wrong or have more examples!

Who do you think had the smartest fight style adjustments as they aged?