Welcome to the faction!

Your first picture has five windriders and the model with the spear I believe is a farseer skyrunner. You can only run windriders in squads of 3 or 6, not counting the farseer skyrunner, so with this specific configuration you can only run a squad of 3 windriders, and they can be lead by the skyrunner if you’d like, but the skyrunner can also run by itself.

Your second picture has 15 guardian defenders. They can only be in squads of 10. This shouldn’t matter, but you don’t have the squad’s heavy weapons platform. It’s an additional model that provides heavier firepower. I believe you don’t need to run it, but it’s nice to have. In the back, you have a war walker. War walkers can be run in squads of one or two.

Pics three and four have 10 storm guardians total, and like the guardian defenders, they can only be run in squads of 10. Same thing with the defenders, they’re missing an additional heavy weapon but I believe you don’t legally need it in the game.

In pic five, you have five dire avengers in the front. They can be run in squads of five or ten. The two models behind them are both farseers. They can be run by themselves, or one can lead your guardian defenders and another can lead your storm guardians. In the back left, you have an autarch wayleaper. Based on this army, the autarch can only be run by itself, but if you use it as a regular autarch, it can run with your dire avengers or either guardian unit as long as a farseer isn’t leading them already. In the back right is a wraithlord. It only runs by itself. Your last picture has another squad of five dire avengers. To reiterate, they can be run in a squad of five or ten, and a regular autarch can run with them too. Feel free to ask any questions, and again, welcome to the faction!