I dont have any prebult squads but I would say probably General Alya Secura would be a good choice with some clones and maybe a few filler jedis and some clone commanders. And then VS. on of the less uber greviouses, some droids, and a doku.

I suppose it depends on the person's gaming experience. I've taught people using 100 point squads consisting of one unique each and filled with troopers - all the same troopers - so they only need to focus on learning the game dynamic and not how to incorporate a dozen abilities and CEs.

when I am teaching new people. i usually start out with 100 pt games. i might even use older pieces like Rebel Storm, Clone Strike, or Universe pieces.

I have taught a few players and agree with the "simple to complex" ways of teaching.

1) Start by going over the rules book (the basics). Make some 100pt squads using one commander (preferrable non-unique with few SAs) and go through melee and non-melee combat. This will help with targeting, line of sight, movement, map terrain (especially doors), etc.

2) Then move on to a few special abilities (double attack, evade, twin, etc). Avoid complex SAs for now.

3) Add a few rounds of some commander effects. Avoid complex (swapping, reroll or death, bombs, etc) for now. Stick to direct bonuses or adding SAs.

4) Next, add in simple force powers (Sith Rage, Block, Deflect, etc). Keep more complex ones (Pawn of the Dark Side, Flow Walking, Turn to the Dark Side, etc) for later.

5) Then combine all the above for a more competitive game.

6) Once they are comfortable with all that, then you can worry about squad building.

Regardless of what everyone may post here, you also have to be comfortable with what and how fast you teach. Remember back to when you were learning and try to help the other person through those difficult things to figure out. And you'll have it!
Good luck

The starter set with Darth Vader and Obi-Wan Kenobi are really good for learning the basics of the game. At least I found that they were.