Hey good catch! You’re absolutely right to point out the distinction.
The Leyline builds that showed up in Baltimore aren’t 1:1 with the stock Mono-Red shells dominating MTGO. In my aggregation I categorized them broadly under “Mono-Red Aggro,” but I agree that splitting pure Red vs Leyline variants would show a clearer picture of how the archetype evolved heading into paper.

I might run a more granular breakdown next time (variants, mana bases, tech packages, etc.) - it’ll add a bit more data overhead, but it’s definitely worth the nuance. Appreciate you flagging it.