EDJ Sports does a lot of analytics work for teams, FootballOutsiders, and ESPN.
I just found out they did coach rankings based on some combination of DVOA and game day decision making. It's not factoring in scheme or day-to-day team management (other than reflected in performance on gameday).
You can see more here: https://edjsports.com/nfl/rankings/2019/week-12/coach-rankings/
Arians is 31st. Not good, and reflects the reality of Arians bad, old school decision making.
For context, Bengals are 31st, WAS 30th, then DEN and MIA.
Top 5 in order are: BAL-SF-NE-MIN-DAL. The two that are interesting to me are Zimmer and Garrett. Garrett's always been mediocre as a coach, but apparently his game day management has really improved. The Vikings have made a huge investment in analytics and it seems Zimmer, who was critical of it previously, has bought in.
