I've started a draft spec defining high level processing and rendering rules to bind an RDF graph to HTML elements.
The UI data binding is specified using HTML attributes, which when hydrated provides valid RDFa.
The idea is to enable bringing pages of data together within a single document
Still early days, but here's the description of a subject-connected list
https://jg10.solidcommunity.net/open-with/rdf-ui-binding.html#subject-connected-list