Look for silicone coated parchment or PTFE (teflon) coated paper. From many previous posts, it appears 'Oil Slick' is the gold standard, but very expensive.
Stay away from Terp Proof. I tried it as they claim it's re-useable. It's not. It usually rips the first time you attempt to use it in a rosin press.
I use "
10M Non Stick Parchment Paper Silicone Baking Mat Roll Kitchen Tool Greaseproof for Cake Tiner Toaster Oven Microwave" purchased through Amazon's Canadian website. I got some in the other day:
Non Stick Parchment Paper for Rosin Press
Each roll makes about 65 15 x 30cm (6 x 12") sheets for 3" x 5" plates, so the cost is about 31
¢ CAD per squish.
There's been lots of discussion here about what to use. Others will chime in with their preferences, or you can use the search function to find other suggestions.