I've created an offline-first web app which is based on service workers. I've created another one that could be pushed to the back end (like on Node.js) that would be just a straight MPA app. I guess both of them could be pushed to the back end if needed. Since I just use them for myself I don't worry about them not working without JS enabled. But I created HTMF, similar to HTMX but made to be a progressive enhancement from the get-go.

https://github.com/jon49/Soccer

https://github.com/jon49/WeightTracker

https://github.com/jon49/MealPlanner

https://github.com/jon49/htmf