I'm struggling with the docs for Express.

I have some fairly simple objects that I want to be displayed in dynamic generated pages and would like to hardcode the calling of data from Express into page templates or possibly page type controllers so they can be modified according to current user information or by URL parameters.

Is it possible to get Express data outside of the Express block? The docs are all so specific to certain use cases it's hard to know what's possible.

For example, I've created an object called sheets with one attribute sheet_name. How would I go about manually calling a list of 'sheets' without having to customise the overly complex Express list block template?