Quick first analysis: the "all female over 3-generations" families all turned out to have either males missing or males in the tree, but set to 'private', which seems to escape the search algorithm.
Of the male families, two absolutely stand out at first glance: the Samaha family and the Worden / Warden families in terms of the sheer number of children and the number of pedigrees.
Samaha appears to be principally recording males only with few dates, but the Worden clan extends over many many branches and generations and it appears that there is clearly something interesting going on. The genealogy is not exclusively male - every once in a while a few girls pop up here and there, but the frequency of male births in the whole clan is astonishing...
Another very interesting family are the descendents of Damase Carpentier (https://www.wikitree.com/genealogy/Carpentier-Descendants-1016
) - closely researched only for the seventh son (whose line appears exclusively male over three further generations). It would be interesting to investigate some of the other six sons to see if their branches are also exclusively male...
Anyone happy to explore with me?