If you're already building on AWS or Google Cloud, you should use Route 53 or Cloud Domains, respectively, so you can leverage your existing IAM policies and avoid putting trust in other organizations unnecessarily.
From another perspective, decoupling your domain from your cloud host means if things go wrong with your hosting you can still migrate to another host with a DNS change. I feel like I'd be more likely to have an issue with a hosting provider than a DNS registrar, but maybe that's a bad assumption.
Sounds like Amazon's relationship with Square. For the use cases they havent had their own engineers write integrations with their primary payment processor to cover, lean on the work of a payments focused company.
I use them too. Great customer service with a real and competent person on the line right away. Decided to go with them after some searching. I was getting off Google and they had an actual office and pictures of the people who worked there on their website. Some of their marketing is a bit corny but have had great service over the past few years.
support isn't that good if you ask me. when I had a problem with my account and they couldn't resolve it, it took quite some time to get my domain back under control.
My limitation for domains is SRS, I need to be able to redirect email to my inbox without paying for an additional service and without emails arriving as spam because of DMARC. Because of this I ended up at Google, which I don't really like because of their nonexistent support.
Dynadot is who I use, prices are just as cheap as NameCheap, but they have a much better website and allow you to "name taste" - return the domain name within 72 hours if you change your mind for a refund.
I've been using PorkBun for a couple of years now. It reminds me of Namecheap in their earlier years. A much simpler UI, great support and decent/fair prices.
Used to talk to the guy that founded them, he was a stand up chap. Great to see they're still around. They used to be a ResellerClub/DirectI reseller but like me (also ran a registrar) they were moving away due to the crappy service being provided.