I call these swirly, curly designs I create paisleys. Some of them have the actual teardrop paisley. Most of them have twisted vine entwined psychedelia. Victorian, Morris-inspired, art deco, & arts and crafts era are all mixed up in my mental Cuisinart.
My grandma sent us lovely sweaters every year. Until the one year we depended on it and opened our presents from her on Christmas eve so we could wear those sweaters to church... and that year she gave us T-shirt-dress nightgowns with puffy paint college logos on them! Ah yes. Fond painful memories, you've captured them well.