My favourites in every path are:
Path A: Wales would defeat Austria and Ukraine would do the same against Scotland. And after a Wales - Ukraine matchup, Wales would manage to qualify for the World Cup.
Path B: Russia would beat Poland and Czech Republic would do it to Sweden. And after a Russia - Czech Republic matchup, Russia would manage to qualify for the World Cup.
Path C: Portugal and Italy would succeed in defeating their opponents. And after a Portugal - Italy matchup, Italy would manage to qualify for the World Cup.
There is still a long time ahead until the matches of course but this is my first prediction for now. After seeing the squads of the teams, things would be clearer.