Web definitions - butcher paper;
A strong wrapping paper that resists penetration by blood or meat fluids. Butcher paper is usually white or reddish in colour, made from kraft pulp and is generally considered to have a density of between 30 lb/3000 sq ft (45 g/m²) and 50 lb/3000 sq ft (81 g/m²).
That would be my first choice - resist fluid penetration/saturation.
However - do not know if the coated masking paper is food-safe.
Cooking at Mason-Dixon BBQ Services
Lang 84 Deluxe Kitchen known as "The Glamazon" , Custom Klose Backyard Chef... of Snot, and a 22.5 WSM
Lang 60 Mobile - The Damsel II, Lang 48 Patio - The Damsel, Bubba Keg Grill - RIP, Double Barrel Smoker and a BSKD