The trouble with "low-code" is that you're stuck on rails - it's very easy to do a few things, but the moment you want something the creators didn't anticipate, prepare for a lot of pain.
Anvil is the opposite approach - it's a dev environment that happens to be simple enough to build a dashboard in minutes, but with a Real Damn Programming Language. It's basically Delphi for the web: It's got a drag-n-drop designer, Python in the browser and on the server, code editor with full-stack autocomplete, etc.
(And unlike "low-code" tools, the runtime engine is open source, so you're not locked in: https://github.com/anvil-works/anvil-runtime)