Commodities of Martian Rails: Colonists

Martian Rails (2009), the traditional board game manufactured by Mayfair Games about railroading on the Red Planet in which players build tracks and haul freight, has a long list of cool commodities that players can transport to generate revenue for their rail companies. For example:

Colonists -- To escape the pressures of overpopulation, depleted minerals, crime, pollution, ecological disasters, constant wars, and ennui on Old Earth, and to fill the vast emptiness of Mars, workers and sometimes their families flock to the frontiers of Mars.

Martian Rails is loaded with references to Martian SF!