In Chrome, I can inspect an element, view its computed styles, and for each property, see not only the computed value, but a link to the stylesheet from which it came (see screenshot).

The question: how might I obtain that same stylesheet reference programmatically?

Note that I use Chrome here for illustrative purposes only. A browser-independent answer would be excellent, but I’ll gladly accept any (scriptable) solution I can run via Chrome, Firefox, Edge, or Safari.

stylesheet link for computed value, via Developer Tools UI

I know I can get to all stylesheets and rules by iterating over document.styleSheets. But that doesn’t indicated which of them “won” (provided the final computed value) for any given element and property.

I’ve also looked at Window.getComputedStyle() and Element.computedStyleMap(). These indicate the winning rules and values, but (far as I can tell) don’t make any reference to the parent stylesheet.

Many thanks in advance!
Nutt