I love Sam's club brand diapers, but they're not the most crunchy for sure. However, Amazon just started their own line that's comparable to some of the more natural lines and you can purchase in bulk and use their subscribe and save discount.

Edited to add link: Amazon Brand - Mama Bear Diapers Size 1, 216 Count, Bears Print (4 Packs of 54) https://www.amazon.com/dp/B0746G1ZDW/ref=cm_sw_r_cp_apa_CtPNBbJT1KTRM