French curl braids are knotless braids with a soft curl left at the end, usually from the middle of the length down. The curly hair is added as the braid finishes, so the top reads clean and the bottom reads loose.
It's close to boho and it isn't the same thing. Boho leaves curls loose along the whole braid, french curl braids all the way and then releases into a curl. Salons list both, separately.
It came up through French and West African braiders and moved fast, which is why the name is French but the technique is not new.
The curl is the whole style, and the curl is also the fragile part. Handled too much it loses its shape well before the braid does.
Neat at the root, soft at the ends.