PewDiePie? Aww nope he doesn't play Minecraft.. If PewDiePie started a server it would become the most famous server in Minecraft + he would get atleast 5000 USD a month if he made a Bro rank for 25-50 USD.
Its a relatively big redstone innvoation network but I dont really know all their ingame names but one of them is
They dont speak english and dont act alone they might be just know as minecraftpg5.
Was the youngest redstoner ACtennisAC (140k) already mentioned? He did awesome stuff at the age of like 9 and is said to be Sethblings son ^^
Another really awesome Redstoner is Cubehamster (55k) with lots of innovation in the early times of redstone. He is a smart guy and uses minecraft for his teaching in the netherlands.
A place for comprehensive redstone tutorials is the channel of MumboJumbo (87k). I follow him since he had 1k subs and he has a nice style and give out world downloads of his test world every once in a while.
I hope this is a good addition to your list =)