And here's the first one.
Had Alpha trion, and alpha trion
Had Optimus prime,
Optimus married elita-1 and
But they adopted the twins Bumblebee and Cliffjumper
And they also adopted hound.
Next family tree:
Had Megatron, and Megatron
Had shockwave and Soundwave,
Soundwave adopted the minicons.
And the other Trees:
The seekers are descendants of Unicron himself.
... This is a major spoiler... Read at your own risk
Hound is a decendant of Primus.
Also Bumblebee and Cliffjumper are Decendants of Micronus.