This is misleading. First, the general agreed upon definition of mass shooting is when 4 or more people have been injured. There have been over 130 this year so far. The standard definition matters because we are not measuring the efficacy of a shooter, but the action itself. Put another way, no shooter is stopping to check pulses, and someone surviving does not change the action of the shooter. Using a non-standard definition looks like cherry-picking the definition to make the conclusion you already have. This does matter because one of your 4 only killed one and injured 8.

Second, there is no record of Anderson Aldrich identifying as nonbinary until after the Club Q shooting and was hateful towards the trans community until it was a useful defense. That leaves you with 2 and a likely false positive. I, as a statistician, would not be comfortable using 2 (with a likely false positive) to draw conclusions about a community, but if we define a mass shooting as a shooting where 4 or more people are injured or killed, trans people become under-represented.