Transformers questions by newbies, and not-so-newbies

[Ode to a Grasshopper]

Um yeah.. that stuffs me around a bit. I only remember the movie. So unicron only created 2 sweeps, Scourge, Cyc and Gavintron. 5 beings from 6 beings. (i'm happy that they travel through time and all)
. wait. thundercracker ,shrapnel and the other insecticons (i'm guessing) appear with hang on.
O.K. So maybe unicron creates them from seekers and insects. but the damaged tf's continue floating off into space, only to return?
But galvatron was definitely megatron.... yeah?

Galvatron was definitely Megatron in TFTM. After that it all gets a bit iffy.
I prefer Skywarp as Cyclonus personally, mostly because the Sweeps and Cyclonus' armada numbers make more sense to me as a reformatting of the Inscticons' cloning abilities, but really...it's a massive can of worms you're better off just ignoring and going with whatever you want. Bombshell is foregrounded as Cyclonus in the reformatting shot which suggests Cyclonus was Bombshell, the latest retcon (which does have priority for official canon) has Skywarp as pre-Cyclonus. Then the Insecticons and both Skywarp and Thundercracker show up in the coronation scene right after their bodies have supposedly been reformatted into Scourge and Cyclonus and/or their followers.

So yeah, you can put pretty much any of them into a display together and it'll have just as much fictional continuity as TFTM.
EDIT...

In Transformers The Movie we see Unicron rebuild Thundercracker, Shrapnel and Kickback into Scourge and two Sweeps respectively. He also rebuilds Skywarp and Bombshell into Cyclonus and his armada (of one ). In the next shot we see only Cyclonus fly into the Decepticon ship and Scourge is followed by three Sweeps! We never ever see that "armada Cyclonus" ever again.

So some people believe that Bombshell or Skywarp (whichever you believe isn't Cyclonus) became that third Sweep and chalk down "armada Cyclonus" as an error. Either that or maybe he became Cyclonus II (aka Krunix)

Sorta.
There is Dirgeclonus/this guy, and IIRC (which is a bit iffy) there's another Cyclonus clone who get destroyed in Five Faces of Darkness. There may even be one who gets destroyed by the Dinobots as they're not boarding the shuttle in TFTM, though again my memory's a bit fuzzy.
Either way, thanks to the wonders of AKOM animation errors there's a certain amount of leeway there for poor 'Armada'.

EDIT #2: Yep, here we go...5 Cyclonus clones. Maybe they were just really shy most of the time, or Galvatron killed them in a fit of insane rage between 5FoD and The Killing Jar.