2013 To Present Coin Collecting

I wish I could help you but I'm more or less in the same 'pickle' as you. I'm going to assume that you are just looking for circulated coins? If so, I guess using the C&C.com website as you mentioned will help the best.
I also use Whitman folders for my circulated items and, like you said, they all die off at 2013. I recently picked up the latest quarter folder (number 6) but it's not very helpful. The latest date it shows is 2013 (again), and although it has six slots for the 2011 Parks Canada quarters it only lists FOUR spots for the eight 2012 "War of 1812" coins.
I use the Charlton books for reference for both the circulated and RCM only released coins, but I'm way behind as my latest catalogues are from 2016. Even those don't list all of the 2015 releases; so if I pick up the 2020 books next year they might be a year to a year-and-a-half behind.

So to answer my own questions it appears Whitman only has spots for circulation strike coins (Coins that were released for circulation) where the other books have spots for all circulation, but also have spots for coins only released in brilliant uncirculated sets, proof sets & specimen sets. So I believe almost all the coins from the nickel to the toonie, from 2013 through 2019 have been released for circulation and would need included in our sets. This is just my person belief of what is going on, I could be wrong.