Although any type of notebook can be adapted as a bullet journal, these are the best notebooks for bullet journaling that I've found.
How to Bullet Journal: The Absolute Ultimate Guide — The Lazy
Best Dot Grid Notebooks for Your Bullet Journal ⋆ The Petite Planner
BEST Notebooks For BULLET Journaling
Archer and Olive Review: Perfect BUJO or art journal
A5 BUJO - minimalist design,fabric texture,firm binding,and exquisite threading.It's dotted Journal also personal organizers PREMIUM 160GSM - Not be ghosting or feathering,zero bleeding.This is standard of Bullet Dot Journal enthusiasts.
SeQeS Bullet Dotted Journal -A5 Dot Grid Notebook 160gsm Pages Number Bleedproof Paper,Hardcover Dot Journal |Personal Organizers | Dotted Grid
The newest Leuchtturm1917 bullet journal edition 2 medium hardcover notebook features 120 g/m² paper and 206 numbered pages in A5 dotted sheets. The 120gsm paper is ideal for a variety of writing instruments. Thanks to the special processing of milling, the paper features low transparency with a smooth surface, preventing the ink from bleeding even with fountain pens. The smooth surface also reduces friction to a low level to provide you with a pleasant writing experience.
Leuchtturm1917 - Bullet Journal Edition 2: Black
Pens + Notebooks for Bullet Journaling — Mushaboom Studio
Scribbles That Matter: Iconic versus the Pro Version with 160 GSM paper (Which is better?)
6 Best Notebooks for Bullet Journaling - Topdust