Hi
Heres what I have found...............
All Butchers papers have a sizing on them which gives them leak resistance and wet strength.
Freezer paper has polythene on one side to avoid freezer burn
Peach "treat" paper also has the sizing and is "treated" to allows meat to breathe and keep colour, the darker colour paper disguises the juices better.
I believe that Kraft paper over 24 inches is untreated as it is used for crafts and table covers. However guys in the US have used the brown food bags from the market as a last resort which must be similar to a Maccy D bag. Don't know about Kraft paper falling apart but seems a reasonable assumption but will investigate.