Is the template filename assigned to a structure entry stored in blueprint tables or structure, or somewhere else, and can I utilize it in my template?

Here is my usage. My desire is to use blueprint not to assign a template directly to an entry but rather, using stash, to include that template as a stash:embed using the partials design pattern. Let’s say home.html contains most everything outside of the body tag, and you want to stash:embed the layout 3-column-stacked.html into it which contains the general layout grid between the body tags only.  Then you want to further stash:embed the partials that make up the data, component html, and conditiona logic.

IOW, I want to stash:embedding the layout template that I’ve chosen through the blueprint carousel. If I could determine what field that template name is stored in, perhaps I could grab it from that field and prevent direct assignment to the entry. I realize this might require a hack to the blueprint add-on, but I’m hoping for a work around.

I would also like to suggest this as a feature.Since stash/partials design is becoming popular it seems, stash:embedding a layout template will become a desirable alternative.

Hope that makes sense.

Thanks.