All right. A 3DS types distribution chart. This chart is with three people still needing to select types (two listed, one spot blank on Zekrom's edited info).
Moving on to the Showdown type distribution chart. I note that the Showdown Division IS COMPLETE based on Zekrom's latest updates, though this type distribution may have an impact still on the 3DS Division to get more types represented there (see below).
If the divisions are combined, there is no type that is not represented at least once. Steel remains the only type chosen three times, and all in one Division. The remainder are chosen only once or twice; for simplicity, the following types are ones that are only selected once between both divisions:
- Normal
- Electric
- Psychic
Anything not listed here (14 other types) are all picked twice between divisions.
You'll also notice this matches the list that has been used for selections already.
I recommend first picks be those that are only selected once between Divisions as I already recommended. Second picks should be limited to all unrepresented types in the 3DS Division EXCEPT Steel (which would be available if someone changes in the Showdown Division). Normal, Electric, and Psychic can therefore be chosen twice, while Rock, Bug, and Grass can be chosen as a second pick once each. If desired, the second picks can be limited to the latter three to ensure everything except Steel is represented.