After a couple of weeks of deliberate blindness and one attempt at self-delusion, I finally checked again for sure this evening. And no, there is no doubt now: Jenna-goat and Anna-goat are both naturally hornless (polled) like their mother. Yes, it is considered a genetic flaw, but not a major one, and certainly not a culling offense. Jessie has functioned just fine without horns since I got her. She's harder to catch, but she also never gets caught in anything (fences, hayricks, other goats).
I'm starting to wonder if naturally polled is sex-linked, since Jessie's mom was polled but father was not, and Jessie's son Theo has obvious and reasonable horns. Theo is a full-blood sibling to Jenna and Anna, so it's probably not Jared's influence here. (Edit: Aerin had horns too, so maybe this isn't sex-linked. Maybe it's just random.)
I plan to sell at least Jenna anyway, and this may make her easier to sell rather than harder. There are a lot of people out there who raise milk goats and would like an angora or two, but don't want to add horned animals to a de-horned herd. Few if any angora raisers will willingly disbud an angora simply for marketing (I sure won't!), but this is different. In my mind, there's nothing wrong with owning or selling one who simply doesn't have any horns from the start.