The settings for cloning chambers (aka entrances) as well as individually placed clones allow you to give AI options to the clones, for example for use in singleplayer quantum quarrel levels (amongst numerous other possibilities).
I've figured out "spinbomb", "lopper" and "quarrel" based on seeing it used in actual levels, but the "drillbridge" AI so far has eluded me. I thought it might drill down on mold bridges but that didn't pan out during testing. So what does it do (if anything)?
(FYI on the other options, for reference:
spinbomb: whenever the clone is spinning, if it detects it is about to bump its head on something it'll start a countdown to nova. For one example see "Secret Garden". Note that the spinning part is not automatic. (in "Secret Garden" it is induced via a proximity trap linked to an action object)
lopper: basically it will try to throw lops at clones of different color whenever it is likely to hit one. See "last lopper" for one example.
quarrel: will clob whenever there are clones of different color in close proximity. I've also very rarely see it drill instead of clob, and in QQ levels I think it might nova if that's enough to take out a clone of different color. See "last lopper" for one example.)