yup, miracle gro perlite has nutes in it and it does say it on the perlite bag. I hate MG! I can't seem to find good perlite locally. The chain stores like home depot, lowes and walmart around here are stocked to the ceilings with every known MG product known to man with little other options. And of course they all only carry the 1 MG perlite in 8qt bag.
I would advise not using the MG perlite for cloning. I've used rapid rooters and peat moss pucks with success. I just planted 4 sprouted seeds in MG perlite in 12oz cups (mini hempy bucket style) about 2 weeks ago and 1 died, 1 was a autoflowering male, and the other 2 are only about are already dead. The other 2 are about 6" tall, a very pale green/yellow, and growing very slowly. They've been that way since after the first week. They've got about 5-6 nodes now, but the branches on each node are super underdeveloped.
I woulda done better if I had reused the junk soil from my last grow!