Here's something for the stat geeks to check: When was the last time a team had two different players hit 40 HR in consecutive years?
Are you meaning like having Dozier last year and Sano on pace for this year? Or two guys each year?
If the former, I suspect it's pretty common. Encarnacion had 42 last year and Donaldson 41 and Bautista 40 in 2016. Trumbo had 47 last year and Davis 47 the year before, etc.