@akavel \- you're welcome. @both \- I'd have to agree that in a language like Nim which relies heavily on type-based overloads that long lists of the same ident in that side-bar/ToC section is not helpful. Right now each is a hyperlink to the specific one. So, collapsing would remove that choice, while including the signature would probably make them long and ugly. Not sure what the best choice to fix all that might be.
To the extent many use/advocate using just the big `theindex.html` to find things in the stdlib, adding GroupBy there might help. The core maintainers are very accepting of documentation upgrades. Someone passionate about the output/formatting should work on that or at least file a Github issue.