Shield stealer is the energy drain laser? I'm not sure that's actually a leech effect. Watching my shield, it's difficult to determine that any gains are not just shield regen - the weapon may just drain down enemy shields, without replenishing my own.
The salvo of 8 - blue? - is probably the gatling ion cannon.
The yellow balls are the celestial ion cannon, I think.
There is also a Shillae (?) tractor beam. It's only really useful (IMO) on rocket-centric loadouts, for pinning fighters down. They don't seem to function against larger ships at all, and though it's a heavy weapon, its range is more comparable to the small arms. It also can't be upgraded in any way.
I doubt I've played 100+ games, but I've managed level 17, and managed to win some interesting self-challenges.