Oh man, this topic nerds me out — Kindle exclusives for graphic novels are a mix of corporate programs, indie hustle, and a few platform-specific originals. I mostly see three camps: Amazon-owned platforms, self-published creators who opt into Kindle’s exclusivity program, and occasional timed deals from smaller publishers.
Amazon/ComiXology is the big name here. Since Amazon bought ComiXology, a lot of digital-first or digital-original comics come through ComiXology and end up tied to the Amazon ecosystem. Some ComiXology Originals are exclusive or debut on that service and are tightly linked to Kindle storefronts. For readers, that often means certain series or special editions show up on Kindle/ComiXology before anywhere else, and sometimes they stay exclusive for a while.
Then there’s the whole KDP world: independent creators or micro-publishers who upload their graphic novels via Kindle Direct Publishing and enroll in KDP Select. KDP Select requires digital exclusivity to the Kindle Store for the enrollment period, which means those titles become Kindle-only (and often available through Kindle Unlimited). I’ve seen webcomic creators and small presses use Kindle Comic Creator to format and then lock into Select to chase KU revenue and promotional placement. Big publishers like Marvel, DC, Image, Dark Horse, Boom!, VIZ, and the like tend not to lock entire digital catalogs to one store long-term — they prefer broad distribution — but small presses sometimes strike timed exclusives with Amazon for promotions. If you’re hunting exclusives, watch for ComiXology Originals, the Kindle Unlimited badge, and creators mentioning KDP Select on their socials.