Right I've got my first 3 sorted but not the order yet, I've not really been keeping up witht he changes to skills and such so some stuff may be wrong.
1) A thieving/assassin Khajiit who either uses a bow or an Illusion spell and dagger combo depending on the situation. Main skills to level will be (based on the Oblivion 7 skills idea,I know it's different in Skyrim) Light armour, One handed weapons, Marksman, Illusion, Sneak, Security and Mercantile. A rogue who always puts his own wealth and health first.
2) A Nord who is basically just a viking, huge weapons and thick armour, possibly with a bit of magic for healing and extra firepower. Main skills here are Two handed weapons, Heavy armour, Block, Armourer, Restoration, Destruction and Speechcraft. A gallant knight/paladin type person who upholds the law no matter what.
3) (This guy has been more vague until now, I've needed a chance to sort him out) A Breton with Gandalf-y type skills, lots of magic but with blades and probably an armour skill too. This time my main skills are Destruction, Restoration, Conjuration, Alteration, One handed weapons, Light Armour and Alchemy/Enchanting.