Yeah, I don't agree with what someone else claims to be their reproduction cycle, though. When yukkuris give birth, it's either to one of the parent or father, not a different one altogether. There's the fact that the evidence supporting the existence of so called tsundere yukkuri is... suspect.
I have a couple of hypothesis I have about how Hourais and Shanghais are born: 1. They are dolls made by Yukkuri Alice. 2. They are dolls made by Yukkuri Shinki, see post #12817
^^ There's no substantial evidence to suggest Sanaes are produced differently. In fact, there's images of Sanaes being produced from other types of yukkuri. I dunno about if Sanae offspring are exclusively Kanako and Suwako... if that's what you believe it's fine, but to come to a generalisation based upon one or two images against the already established precedents set from commonly featured yukkuri and stories isn't very sturdy.
Anyway, that's a set of interesting hypothesis pgraphics. Maybe it might be a set of theories to detail put up on the shanghai article in the wiki. There's always multiple interpretations of everything and not one consistent view, it'll be good to have another viewpoint as the material is so scarce.
Indeed... all you have to do is search the name of the yukkuri here as a tag to see that the "information" is fabricated, or are sets of generalisations created from a /minority/ of pictures. The guy doing it doesn't seem to care about the wiki as an actual source of information, and is merely putting up his own beliefs and passing them off as the status quo (or retroactively writing his own stories to justify his own points... not very trustworthy, if you ask me).