As a fan of older electronic music before it started dying down to deep house, I personally believe that the "club/extended mixes" are the full intro/outro versions and the "radio edits" are just edited version. Problem is, seeking on some Queen fansites (specially QueenVault) shows that many of us keep categorising the radio edits of Queen remixes from the Vanguard and Miami Project releases above the proper versions. Take this sentence from QueenVault for example:
"The backing dance track from the Radio Mix has been stretched to more than twice its original length and the vocals have almost entirely been dropped (except a few samples)."
The mention of the Radio Mix could be changed to that of the Vocal Mix, with the "twice its original length" line modified and moved since it's 40 seconds longer than the full version.
On another note, Vanguard's Flash remix started off as a underground club record credited to only Vanguard before EMI approved a commercial release, so try giving that a mention.