I do not specialize in the polymer $5.00 but I do try to keep track of its signatures & prefix release. Here's a list of the signatures & prefix change-overs for the FIVES issued:
2013 FIVE:Wilkins-Carney HBG (below 3.62M)
Macklem-Poloz HBG (above 3.62M)
Macklem-Poloz HMC (below 5.82M)
Wilkins-Poloz HMC (above 5.82M)
Wilkins-Poloz IND (below 8.98M)
Wilkins-Macklem IND (above 8.98M)
Wilkins-Macklem INK (below 6.28M)
Lane-Macklem INK (above 6.28M)
Lane-Macklem INS (below 3.96M)
Rogers-Macklem INS (above 3.96M)
I have only found one Lane-Macklem INS (below 3.96M) & one Lane-Macklem INK (above 6.28M). I have not really been searching in earnest so I don't want to suggest they're difficult (or anything) but I have found it more difficult to access UNC notes at my branches.
The best way to find the above info (& deeper insight into the $5.00) is to register with the Canadian Paper Money Forum so you can access their Serial Number Database. It actually has all the info I posted above & more plate # matrix data which you may find interesting.
https://cdnpapermoney.com/forum/