He has a very handsome head that does remind me of some working lines. These are not the best pictures of him, I went and looked at some other pics you have in your other posts, I definitely think there is working line in his lineage, but most likely he is just a mix of lines, typical pet-dog breeding.
Thank you for taking him in and caring for him! He looks like he is very happy with you!
BH, OB1, TR1, AD
Rottweiler/Hairy Dog mix?? Shelter rescue
Gryffon Vom Wildhaus