Yeah that was my recollection as well. I really am not sure how they get to 32 because the reality is in terms of how NFL coaches discuss personnel, there are only 21 combinations that I am aware of.
00, 01, 02, 03, 04, 05, 10, 11, 12, 13, 14, 20, 21, 22, 23, 30, 31, 32, 40, 41, 50
First number represents number of running backs on the field and 2nd number is number of tight ends. So it seems they may be counting when a defender or OL reports as eligible receiver but in reality that is still an OL or defender playing the position of RB, WR, TE so really still technically one of the above personnel groupings. It is not like Mack reports for offense then lines up at OLB or DE. He lines up as a WR, TE, or RB.
Rams for example run 11 personnel (1 RB, 1 TE and 3 WRs) the vast majority of the time ie around 85%.