I can throw my personal collection stats at this discussion. My Detroit team set is comprised of Detroit cards that were issued in 1887, 1888, and 1889.
There are 28 different poses in 1887, I'm 100% complete (28/28), have upgraded most poses 2-3 times. Joe Maples has also completed the 1887 run.
30 new poses were introduced in 1888, all Fb, I'm 50% complete (15/30). There were also a number of re-issued poses from 1887, some Fa others Fb, I have 6 such cards.
14 new poses were introduced in 1889, I'm 79% complete (11/14). The 1889 Detroit cards depict Detroit's International Association team, all team change cards. These International Association cards are a bit tougher than the more mainstream NL, AA, & WA 1889 cards.
I do collect all variations including cabinets and Gypsy Queens. Here is a photo I shared last year when I completed the "Big 4" in large format. I have all four possible Detroit variations for Rowe & Richardson (1887 & 1888 N172, N175, and N173). The 1888 N172s, N175s, and N173s can be very tough to come by, difficult to complete the grand-slam.