There are many different bindings that fall under the category of long-stitch, but most are distinguishable by long stitches that attach gatherings of folded pages (also called signatures)
Longstitch Bookbinding Tutorial for a Leather Journal - tortagialla
Make your own leather journal with our complete DIY kit! This kit includes everything you will need to bind your own long-stitch journal, plus you can
Leather Journal DIY Craft Kit Long-Stitch Binding
How I bind my notebooks using glue and paper tape for 0.25€ : r/Frugal
Crochet a Gorgeous Set of Rainbow Nesting Baskets
Long-Stitch Leather Journal Workshop - Learn Bookbinding
Long-Stitch Leather Journal Workshop - Learn Bookbinding
Bookbinding Fundamentals: Long-Stitch Leather Journal, Envato Tuts+
Crochet a Gorgeous Set of Rainbow Nesting Baskets
85 Mother's Day Crafts Crafts & DIY Tutorials
Long Stitch • Handmade Books and Journals