https://www.cloudns.net/premium/
https://www.luadns.com/pricing.html
I've found every other offering to be lacking. Some examples: Cloudflare is alright but has settings footguns if you're not used to Their Way of Doing It™ (e.g., before using DNSControl, I had to manually flip switches to turn off proxying every time I updated my zones). deSEC is free and okay, but sometimes quite slow to propagate and its UI+API are unwieldy. DNS Made Easy is often pushed on social media, but it's ridiculously pricey for what you get if you don't need a SLA. DNSimple seemed nice but IIRC I couldn't get a different API token per zone (?).
I'm currently relying mainly on LuaDNS. For me, it functions as a "dumb" DNS host (i.e., not using their Lua configuration-as-code system). Their API is oddly designed, but it's been passable since a recent-ish update, which has allowed me to safely port my zone files to DNSControl.
50 cents per domain per month 10 cents per million queries
That’s prob cheap enough to support lots of little hobby sites and bigger traffic sites likely have some budget.
[1] Not completely sure but I think this was the incident https://blog.dnsimple.com/2020/07/incident-dns-resolution/