It's a little unfair to claim these are the only bid bots. You can say it's probably 90% of them (giving a 10% margin for error), but even then it's not accounting for all the SP. There could be bots out there with more SP tied up in them than all the bots you've listed so far, and that'll really set things off (not likely though).

It's a good analysis, but it's not fair, so what numbers you take away from this...heed skepticism folks.

This number will change a little when you factor in bots who execute votes via a users account (like MinnowBooster and SteemMarket) but won't be too far off.

There are other bots as well. Community bots for example.