Not really.
Because, currently except the Knight (and possibly Cursed girl), none of MC's Harem members are from a Noble background.
In a Harem situation as this, it is actually a pretty common notion that, those born from a non-Noble Mother bloodline (aka., Commoner Mother bloodline) usually are excluded from Succession of the House, unless all the other Noble bloodline ones are dead.
So, based on current bloodline order of MC's Harem members, the highest position would be of Knight girl, followed by Cursed girl. Since both of them belong to Noble bloodline (though Cursed girl house is now considered as fallen Noble house).
The Maid Sisters, Bunny-suit girl, Carpenter girl and the Thief girl, all fall under Commoner position, so their children would be post-last in line of succession.
Elf girl's child would probably not be allowed to inherit the house in any condition as Elf seem to have a low social position and a bad reputation (plus she is a former prostitute). Similarly the child of the Cat MILF (if she has one with MC) might not be allowed either, because beastkin don't seem to have high social status in this series.