Aside from the few sequels can you put these in any chronological order?
>>26985133
RGBY/FRLG + RSE/ORAS → GSC/HGSS + DPPt → BW → BW2/XY
There are two universes, one where Mega Evolution exists and one where it doesn't. The timelines are 100% identical in both. Events are slightly different, as seen in ORAS, but otherwise the same. Lysandre probably didn't get the Ultimate Weapon to work in the non-Mega universe though.
>>26985133
I wonder where SM will go?
>>26985133
No.
>>26985133
Red-Green-Blue/Fire-Leaf & Ruby-Sapphire/Emerald/Omega-Alpha -> Gold-Silver/Crystal/Heart-Soul & Diamond-Pearl/Platinum -> Black-White -> Black2-White2 & X-Y -> Sun-Moon (maybe)
Dividing them:
Classic: Red-Green-Blue -> [Hoenn] -> Gold-Silver/Crystal -> [Sinnoh] -> [Unova] -> [Kalos???]
Remake: Fire-Leaf -> Ruby-Sapphire/Emerald -> Heart-Soul -> Diamond-Pearl/Platinum -> Black-White -> Black2-White2 -> [Kalos???]
Re:Remake: [Kanto] -> Omega-Alpha -> [Jotho] -> [Sinnoh] -> [Unova] -> X-Y