Current endgame employee here. Yes. In R&D our data science team has published a few and the vulnerability research & prevention team has as well. Some of these were in the form of talks.
The article that your co-worker, Cody Pierce, wrote refers to MELTDOWN#1,2,3 and SPECTRE#1,2,3 in a number of headings describing the different detection scenarios. Nowhere in the article is there an explanation about what those numbered heading MELTDOWN / SPECTRE titles are referring to. May you provide links to what these are referring to, or ask Cody Pierce to post an explanation on the blog.
nm. I see now that the title of each variant is in the embedded image depicting the tabular results. I was trying to find the explanation via text search.
IIRC the most relevant to this blog post is here: https://www.blackhat.com/docs/us-16/materials/us-16-Pierce-C...