How to describe the evolutionary pattern seen in my phylogenetic trees?

Question

[lauraeiv]

The phylogenetic trees for my genes have the same pattern. They all have two distinct clusters and the clusters consist of the same genomes for all. So it looks like there is a selective pressure which supports my hypothesis.

I am trying to come up with the correct wording to describe the tree visually for my thesis.

How do I describe the pattern seen for all gene trees? Do they have the same evolutionary/branching/clustering pattern? I'm just not sure how to go about wording it.

Thanks