Wix made them till ~2015.
Fram/Champ (Frampion) made them for around a year or so (mid 2015 to early 2017), and then Purolator after that.
I think some of the large diesel filters may still be made by Wix (or were made till around 2017).
Most filters are relatively easy to see who makes them.
If they have oval inlet holes, they are Purolator made. If they have louvers, they are Purolator made.
Date code is on top and cryptic (but easy to decode if you know the pattern)
Wix made have round inlet holes, spiral center tube has round holes, and has a date code on the top of the filter.
Fram will have round or slightly oval inlet holes, the center tube will have holes, but also has a little strip inside that looks like sideways louvers. Date code is cryptic and on the side of the can.
Not many Wix or Frampion made CQ filters out there anymore, most all will be Purolator made now.
Here are a few I have cut open:
CQ Blue, Wix made
CQ Red, Wix made
CQ Red, Fram made