Which are best practices by using "least active" and "most available" with Omnichannel in Service Cloud?

Hi all,

I got dizzy trying to understand many sources regarding the use of "least active" and "most available" with Omnichannel.

I don't want the explanation of each of them. I just would like to know which are best practices in the real work world, which one to use in which situation or use cases (please no copy paste from the theory ;))? when is "least active" and "most available" in the real world used? or which one is the most used in the real world?.