What should I fly/ tactics?

The only thing I'm not considering is jointing the bro-bot clan myself. I guess when it comes to bro-bots, I'm bro-not.

Well as a brobot player im very sensitive to stress dealing builds, smart blocking and higher PS dodgers.

Aggressors have one combined weakness: arc + large base

unlike sh*tty large-base turrets, you can (and have to) outplay them rather than only hope to out-dice them

To facilitate this, you want to familiarize yourself with their red maneuvers (since they're the only things that'll give aggressors consecutive shots, otherwise they'll have to spend several turns swiveling back around), how to stop said maneuvers (stress and blocking), and flood the board with the largest obstructions possible

Try this:

Rear Admiral Chiraneau — VT-49 Decimator 46

Push the Limit 3

Rebel Captive 3

Ysanne Isard 4

Darth Vader 3

Proximity Mines 3

Engine Upgrade 4

Soontir Fel — TIE Interceptor 27

Push the Limit 3

Autothrusters 2

Targeting Computer 2

Royal Guard TIE 0

Focus fire and only let one IG a shot on Soontir at R3. Drop a Mine in front of the IG and game over

As mentioned, IG's are fairly action-dependent and with forward arc only, can struggle against higher Pilot Skill (if you have post-move actions to avoid firing arcs).

So, they hate being blocked, stressed and outmanoeuvred. They also don't like dense asteroid/debris fields, so its generally a good idea to take the fight in that direction. Damage that bypasses green dice is also an option, although tricky to pull off (mines/bombs/vader crew can be avoided by their speed, but higher PS helps hitting with these...)

I've done well with this list:

Chiran0saurus Rex

Chiraneau w/ VI, Yssane, Rebel Captive, Navigator, and Engine Upgrade

Rexlar Brath w/ VI

Both go on PS 10. The Decimator with PS 10, Navigator, and EU is fantastic for arc dodging. Rebel Captive causes stress. I've beaten a bro-bot list.

I fly Whisper/Echo + Soontir + Carnor, or Soontir + Carnor + Turr almost exclusively, and can vouch for the lists against dual IGs. Carnor effectively shuts down any advanced sensors into S-Turn shenanigans by being Carnor. The other 2 are in both lists are excellent arc dodgers which exploit the only thing that keeps the IG balanced - front arc only. The only thing that tripped me up against IGs was a surprise inertial dampeners that I didn't see when I looked as my opponents list.

Do you guys have a list for rebels?

you don't need a list to beat aggressors. FFG balanced them very well with a counter exploitable by all lists (obstructions)

As long as you don't spam 2-dice attacks (traditionally don't do well versus high agility), you'll be set to have gameplay determine your wins rather than one list being superior to the other.

Even something as basic as BBBBZ will straight steamroll Aggressors provided the player does not allow the Aggressors to dance around the slower ships