Everything apart from the dA Muro pictures are (and I would assume the lineart for the baby picture is). He had a load of other stolen pictures uploaded, but removed them after I commented who they were stolen from on each one, but he then blocked me. One is stolen from Janie Mills [link]
, one from Aaron Paquette [link]
(fourth from the bottom) and one from Alex Gross [link]
. The heart and siren ones are stolen, but I couldn't find a definite artist for them.