These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
Epic Riff: "Sunshine Of Your Love", "White Room"...
Face of the Band: A common misconception is that Eric Clapton was seen as this, as he subsequently became the most famous member, but back then Bruce was much more in the limelight. And somewhat averted by Baker as he's one of the more famous (and distinctive) drummers.
Stuck In Their Shadow: Jack Bruce, these days. Ginger Baker has managed to escape this, for the most part.