There's room for ALL of the races really, especially all of the main armies. Cathay, Ind, Nippon, Estalia, Tilea, Pirates of Sartosa, Halflings will all be ignored first before Lizardmen.
There are Lizardmen on the main continent in the proximity of the Tomb Kings as there is a TK city called Rasetra which was well known even before they were undead for their lizard auxillaries. They had cold ones pulling chariots, kroxigors and thunderlizards (Bastillodons).
The main bulk are in Lustria but then you could argue the same for the Dark Elves, Naggaroth is north of Lustria and fairly off on its own.
I can at the very least envisage a game that has all the main modelled armies.