Have you searched past Community posts? This isn't the first time people have tossed around ideas for segmentations. But it's impossible to just tell you Use these segmentations -- if you have static lists surely they already reflect business-specific divisions between leads.
As Sanford said, there is no standard best practice Segments. It will highly depend on your industry, specific organisational needs and goals, etc. However, below a very useful article written by Marketo on the topic:
I hope this helps you!