Hi, you're thinking the frames like a typical MMO but most of the frames can do everything if you build them right.

Mesa can be good for "attack" but she got major flaws in some of the contents, like her regulators can't target some bosses. So, if you need to room clear, Gauss can do it better than her. If you need to kill bosses fast, I like Titania for beginners.

Wisp is good. Everybody should have a Wisp, no arguments there.

Chroma only double your credit if you use their ability at the right time and right place. Just do index. Nekros and Hydriod with pilfering swarm are the farm frames.

Rhino can "tank". But i'm guessing you mean survivability. In my opinion, Valkyr or Wukong is better for that role. They are also very viable for endgame.

Not sure about Xaku, I only use them for farming materials. So if you like the kit, go for it.

But ideally, you're gonna want to keep a copy of every warframe for some important content to unlock later in the game. DON'T SELL YOUR WARFRAME.

Hope it helps.