One of the core tenets of 4e is that fluff doesn't matter and can/should be freely rewritten in any way you see fit. Rogues have no mechanical or flavor tie to a thieves guild, nor to paladins belong to a sect of knights or rangers to an order, unless you say they do. And then they do, even if your character is a sorcerer who belongs to all three.

I see and respect that titles matter to you, but without unlimited multiclassing, you can't get all of that under one roof, unless you start as a bard or take the traveler's harlequin paragon path, both of which allow you to multiclass into more than one class. But even then, the multiclass feats in 4e are very different than taking a level of a different class in prior editions, and quite often don't mechanically do very much to make you feel like a member of that class. So you end up asserting much of the associated flavor even if you jump through mehanical hoops, which always leads me to feel like it's easier to just reflavor whatever you want however you want without trying to bring conflicting mechanics together to create something functional.

A sorcerer can be high-dex high-cha, which easily lends itself to being a good party face and thievery expert, and which will satisfy the requirements for rogue, ranger, and paladin multiclass feats quite easily. Even if you do take them, though, there's a lot more restrictions on how/when/with what weapons you can apply sneak attack and ranger bonus damage than in 3.5, so you may end up feeling disappointed there.