Don't mean to add 1 more to the list, but I would say tRPC is a must have for side projects for me now where I'm not requiring a publicly facing API.

The ability to just define a function on the backend, and it be callable in my frontend, with responses automatically typed is a game changer for building fast.

For me that means https://create.t3.gg/ is the current go-to for starting a new project, but it's definitely missing some pieces this stack has.