There are 15 here because I included all three Sandtrooper variants.  So technically I think the answer is the white and black pauldron'd Sandtroopers.

The Ghorman massacre, and Mon Mothma's speech to the senate blaming Palpatine, is what causes her to flee Coruscant because she is charged with sedition.  JHe fleeing Coruscant is in Rebels and the speech is covered, but there's not much on what happened in Ghorman. 

That will change with Andor.

I got that too, I believe the official release date was last week sometime?

Have you met us?   

Have you met the people from other sites?!

I feel like we're a small, but relatively normal and socially adjusted bunch.

Have you met us?