Friendly stray wandering in NOMA

Last night I was walking my three dogs in NOMA, and around 4th and M NE a stray approached (See photos). He was very calm, sweet, and was obsessed with my pittie girl. He followed us back to Pierce St, being calm and gentle the whole time, despite two of my dogs being fairly reactive (thus the walk at 1am). I tried contacting Brandywine SPCA, but they didn't have anyone available, and by the time I got my dogs in my building, he had wandered off. He didn't have a collar, but had good manners and a sweet disposition. I was curious if anyone had lost a pet or encountered him. I felt so bad I wasn't able to get him to safety, I'd love to get him into a good home.