If I understand you correctly about current playing alternative version of playing track I already have a method in place that does that but I don't think it's for everyone. You need Columns ui and library tree component (the older columns ui version, not the jscript version of the same name) although I guess perhaps with default ui and popup panels library tree could work too (untested).
First, a screenshot:
This show all versions in library of current playing track "Last Train to Transcentral" by The KLF. It doesn't show the artist or title just because I have limited width on that panel and only want necessary information to show.
For this to work you first need to strip down the title of the track to its 'absolute form', meaning stripping away stuff like "remix", "remasterd", "12 inch version", "DJ whoever mix", "live in wherever version"....basically anything that's not part of the actual title and relegate that information to a different tag which I call "Track Info". I also use an additional tag called "track type" which can either be acoustic, remix, demo or live.
The library tree has a filter field and when formatted like this
%artist%-%title% IS $nowplaying{%artist%-%title%}
It will show all titles which are the same (hence the purpose of splitting up track info from the actual title). You can set view format to whatever you like to be shown, %track info% and/or %rating% seems logical.
An extra step I devised that proved very helpful for me for identifying same track but which have slight different spellings is using masstagger and use "format value" with this formatting pattern:
$crc32($lower($ascii(%artist% $replace(%title%,$char(32),,$char(33),,$char(34),,$char(39),,$char(40),,$char(41),,$char(44),,$char(46),,$char(47),,$char(58),,$char(59),,$char(63),,$char(96),,$char(145),,$char(146),,$char(147),,$char(148),))))
Destination field name: FOO_ID
Basically what this does is formatting all artist-title to an integer and in the process remove all spaces, punctuation marks and other often occurring marks. This ensure for example tracks which are named the same but are not 100% identical (Example: KLF - What Time is Love? or KLF - What Time Is Love) will still be shown as the same in library tree.
If you then use as filter in library tree
%FOO_ID% IS $nowplaying{%FOO_ID%}
Then this will yield more trustworthy results without the track titles needing to be 100% identical.