Nick Fuentes has repeatedly condemned political violence for years, he and his followers have also been trying to get Kirk to debate him, so killing is counter-productive from that perspective. Furthermore, the "attacks" by Laura Loomer that I've seen don't get anywhere near calling for violence.
Now that it turned out to be a groyper, you'll have to recalibrate your priors. Turns out it's the people who buy the most guns who are the most violent.
It did not "turn out to be a groyper". There is zero substantial evidence for this claim, its a complete fabrication. Elle Reeve, a journalist at CNN who has followed the far-right since the infamous Charlottesville "Unite the Right" rally in 2017, said of those claiming that the shooter was a Groyper that, "It’s like they’re grasping at vapor."
I've did not claim it was someone who is trans, an immigrant, or woke, however all evidence currently available points to him being a leftist. Some people early on were lead to believe that the shooter was trans due to reports of "trans-ideology" being found on the casings, but that was a rash, pre-mature extrapolation. The relevant text can be attributed to a wider array of groups/online sub-cultures (notably, the text cannot be clearly attributed to the groypers).
There is, however, evidence that the shooter was on the far-left.
1. Terminology used by the radical-left-wing to slander Kirk found on the casings ("hey fascist! CATCH!"). No Groyper would ever use such a phrase, they don't think of Kirk as a fascist and themselves get accused of being fascists.
2. Reference to an anti-fascist song most often played by far-left figures, particularly those identifying themselves as "anti-fascist".
3. A high school friend described the killer as being left-leaning on issues and that he was the only member of his family who was a leftist. This is hearsay so I take it with a grain of salt, but its still important evidence which fits perfectly with the other points.
Furthermore, all of the "evidence" you put forward cannot be considered by any reasonable person to be evidence that someone is a Groyper.
1. Being online a lot isn't evidence that someone is a Groyper. Massive numbers of apolotical, right-leaning, and left-leaning people are "terminally online".
2. I am aware of no evidence at this point that the killer was an "incel" in the sense that the term is typically used.
3. Being white does not make someone a Groyper. Funnily enough, on the contrary, among the online far-right the groypers are often accused of being non-white due to their relative openness to other racial groups.
4. Being Mormon is not evidence of being a Groyper. On the contrary, Catholics are most represented among the groypers with only a few figures being Mormon.
5. Playing video games is not evidence that someone is a Groyper.
6. I am aware of no evidence at this point that the killer was a "gun nut". Furthermore, even if he was, this would not be evidence that he was a Groyper since guns are not one of the primary issues addressed by groypers and would only tangentially be related.
In summary, none of what you said is evidence of your claims. I am begging you, and others, to engage honestly about this instead of spreading false claims.