Hi Nayeli,
I need to clarify a few things based on your post and screencaps. Correct me if I misunderstood something.
Both your “Groups” pages say (All) afterwards. That tells me that you created a dynamic page with no filtering (no dynamic fields) so they will BOTH show all the items in your collection. If you want to create a dynamic item page, as your post suggests, you’re going to need to add at least one dynamic field to the URL when you create the page here:
Also, you should know that if you want to display all of the items in your collection as a list, you don’t need to use a dynamic page to do that. You can just use a table or gallery on a regular page, add a dataset to the page and connect your table or gallery to it.
But getting to your point about the way the names of dynamic pages show up in the list, I think that’s something we should consider. So yes, please open a feature request on it.
Thanks - Jeff