Your 3rd paragraph is one of the reasons I follow Liverpool.
by G.K.Chesterton (2023-01-23 00:12:33)

In reply to: Arsenal and Chelsea are more popular than Man City.  posted by Slainte Joe

There are a few others, but that was part of the charm before Klopp came along.

For the original poster's question, the first soccer shirt in the house was an AC Milan shirt someone picked up at the airport in Rome, but the first soccer posters were two (2!) posters of Fernando Torres that one of the girls brought into the house when he was with Liverpool. Her younger brother glommed onto ManU at the end of their glory days. I don't know how B22 picked up Arsenal.