ThriveCart is a creator's cart, and a well-liked one. Its reputation was built on a lifetime price you pay once and a checkout that converts: order bumps, one-click upsells, split-tested pages and an affiliate centre that course and digital-product sellers lean on. If you sell a handful of mainstream offers and want a cart you buy outright, it is a sensible pick.
Where it sits on this site's four checkout criteria is simple, because it delegates most of them. Payments run through the one processor you connect, so nothing spreads across accounts and nothing falls back when a card is declined. High-risk business is out, because the gateways behind it ban it and ThriveCart cannot work around that. How hard a failed payment is retried depends on which processor you chose, and it varies a lot. Its own reminder emails are a Pro+ feature, and disputes are left to whichever gateway took the money, so it brings no chargeback tooling of its own.
None of that is a flaw for a course seller, which is who it is built for. It is simply the reason it is not the tool for someone routing ad traffic to high-risk offers across more than one account. For that job it ranks third here, behind ElasticFunnels on routing and behind Paddle on hands-off compliance.