Just tell Stanley Lui which article(s) you would like to work on. Most subjects, even those not listed here, are acceptable. Please follow this link for the details of TF canonicity.
Alpha Trion
Arcee
Archeville, Dr.
Brain Masters
Breast Force
Bumblebee
Convoy
Cybertrons
Deathsaurus
Destrons
Dinoforce
Earth
Fortress Maximus
Goldbug
Headmasters
Jinrai
Multiforce
Overlord
Scorponok
Seibertron
Sol
Star Convoy
Star Saber
Victory Leo
Witwicky, Daniel