multiple develop settings for a single image?

For 'visually' seeing a variety of edits to one image file in the Library Grid (or Loupe view)- Virtual Copies is the way I prefer.

And there is a Plugin that will use a Group of Presets (you choose the Group) and create a Virtual Copy for each and every Preset in the Group (eg. Your 'Favorites' ).  Excessor – Capture Monkey 

It still works in LrC v11.2

If you don't like any- simply delete the VCs (NOT the Original!). If you like one- edit it a bit further to your desire.

There are at least two ways to do this: Snapshots, and virtual copies.

If you want the variations to be part of one file, create snapshots in the left panel stack of the Develop module.

If you want each variation to be a separate instance in the catalog, create virtual copies (choose Photo > Create Virtual Copy). Some reasons to use virtual copies are if you would like to easily export or print the versions without having to switch which snapshot is active, or if you need them to be independent instances so that, for example, the artistic version can go into one collection, and the technical version can go into another collection. Or maybe you want to apply different metadata (keywords, captions…) to each version. Virtual copies are not physical copies so they use almost no additional storage space; they’re like Mac aliases or Windows shortcuts in that they are instances that refer to the original actual file.