There are still a huge number, and Atlas is being delusional about suburban trends as usual.
The majority of those are trending D though. They're still super Republican, but how is Atlas delusional about suburban trends for recognizing they are happening, even if they may not flip all those counties?
Meanwhile, how many non-college white filled counties are trending D? Oh right, practically zero.
The point is that "trending" is somewhat of a birdwalk to answering this question and comes across like "yeah, Hamilton County, IN still voted super-duper Republican, but not super-SUPER-duper Republican!" ... cool? This is just asking if there are still very Republican suburbs, and anyone who takes the time to look into that question knows the answer is an emphatic yes. Also, if you are a Democrat who goes from Williamson County, TN by 46.5% in 2012 to 35.00% in 2016, how long and how far do you really think that trend is going to go? *TRENDS* usually only last so long before something else shakes up the party dynamics.