The missing middle appears to be tree lights that have a traditional appearance (and don’t look like robot spaghetti). Adhesive LED light strips are meant to be only indirectly visible.
They are strip lights, but the light is mostly omnidirectional, and the strip material is flexible. If you want a dark-colored strip, which looks better on a dark-green tree, here's a non-BTF option: https://www.aliexpress.us/item/3256805412113378.html
These are a good stand-in: https://www.aliexpress.com/item/1005002906547500.html
They are strip lights, but the light is mostly omnidirectional, and the strip material is flexible. If you want a dark-colored strip, which looks better on a dark-green tree, here's a non-BTF option: https://www.aliexpress.us/item/3256805412113378.html