Consistency is good, is there a class for across-the-board consistency? Paint class, plaster class, butter class—gotta be something!
Commoner.
I feel like Bard's are the 'jack of all trades' class, basic combat ability, a bit of arcane spellcasting, a few rogue skills. This is based purely on my limited knowledge of 3.5e as it was used in Bioware's CRPGS of my youth so is likely an out of date opinion.
In 5th edition, Bards get an ability called Jack Of All Trades that gives them a +1 bonus on all skill checks, which improves as they level up.