i'm not qualified to be able to give a for sure kind of answer. but it sounds like there might be more than just one thing causing these. im sorry though, i also dont know any terms. but i can relate to some of the things youve expressed
I also find it difficult when choosing one thing over another thing, because i worry that the other thing would feel left out or be sad. i was a lot more like that when i was younger. i would make bonds and attachments to things, and objects. I was kinda like the monkey that is motherless and you see clinging to a wooden post inside of a cage. i think my perception on reality was a little different than others who didnt form these attachments with their jackets or backpacks or chairs(in 1st grade i came to school with 3 jackets on because i didnt want the other 2 to feel neglected of abandoned.) i think i may have also been self projecting myself onto these objects in a way to cope with my own sadness and feelings.