A composition comprising: a) a first polymer; b) a second polymer; c) a third polymer; and, d) a compatibilizer, wherein the compatibilizer is i) a functionalized olefin-based polymer formed from at least and: a block composite comprising: a. a block copolymer comprising a propylene-based crystalline block and an ethylene/α-olefin block; b. a propylene-based crystalline polymer; and, c. an ethylene/α-olefin polymer; and at least one functionalization agent; and/or (ii) a functionalized olefin-based polymer formed from at least and: a crystalline block composite comprising: a. a block copolymer comprising a propylene-based crystalline block and crystalline ethylene-based block; b. a propylene-based crystalline polymer; and, c. a crystalline ethylene-based polymer; and at least one functionalization agent wherein the first, second and third polymers are different. a) a first polymer; b) a second polymer; c) a third polymer; and, d) a compatibilizer, wherein the compatibilizer is i) a functionalized olefin-based polymer formed from at least and: a block composite comprising: a. a block copolymer comprising a propylene-based crystalline block and an ethylene/α-olefin block; b. a propylene-based crystalline polymer; and, c. an ethylene/α-olefin polymer; and at least one functionalization agent; and/or (ii) a functionalized olefin-based polymer formed from at least and: a crystalline block composite comprising: a. a block copolymer comprising a propylene-based crystalline block and crystalline ethylene-based block; b. a propylene-based crystalline polymer; and, c. a crystalline ethylene-based polymer; and at least one functionalization agent wherein the first, second and third polymers are different. i) a functionalized olefin-based polymer formed from at least and: a block composite comprising: a. a block copolymer comprising a propylene-based crystalline block and an ethylene/α-olefin block; b. a propylene-based crystalline polymer; and, c. an ethylene/α-olefin polymer; and at least one functionalization agent; and/or a block composite comprising: a. a block copolymer comprising a propylene-based crystalline block and an ethylene/α-olefin block; b. a propylene-based crystalline polymer; and, c. an ethylene/α-olefin polymer; and a. a block copolymer comprising a propylene-based crystalline block and an ethylene/α-olefin block; b. a propylene-based crystalline polymer; and, c. an ethylene/α-olefin polymer; and at least one functionalization agent; and/or (ii) a functionalized olefin-based polymer formed from at least and: a crystalline block composite comprising: a. a block copolymer comprising a propylene-based crystalline block and crystalline ethylene-based block; b. a propylene-based crystalline polymer; and, c. a crystalline ethylene-based polymer; and at least one functionalization agent a crystalline block composite comprising: a. a block copolymer comprising a propylene-based crystalline block and crystalline ethylene-based block; b. a propylene-based crystalline polymer; and, c. a crystalline ethylene-based polymer; and a. a block copolymer comprising a propylene-based crystalline block and crystalline ethylene-based block; b. a propylene-based crystalline polymer; and, c. a crystalline ethylene-based polymer; and at least one functionalization agent