The hard thing is that the tech group they should have is really dependent on the situation. If they are released in 1700 from a Western sweden, the people that live there would probably have picked up the swedish technology and military standards, so it would make sense for them to be western, or maybe eastern, tech. If they break free in 1480 while nothing has happened in their lands at all, they should probably be in the nomad group or something like that. Maybe religion would be a decent indicator of their level of adoption of Swedish (or Russian/Danish) ways? If they're shamanist, they get Nomad/Chinese tech, if they are christian/muslim they get western or eastern tech.