Change in results with more senators elected?

If each state was to have elected seven, eight or nine senators instead of six senators at each election, how would the overall result have changed?

Does not include territory senators. Uses actual ballot data, with counts conducted using ConcreteSTV. 2016 results compared to six-seat result, not actual 12-seat result.
Chart: Ben RaueSource: ConcreteSTVGet the dataCreated with Datawrapper