A few things - the Oerters aren't dead straight along the toe, but close enough that to my mind it's kind of impossible to tell if he was deliberatey trying to add a little concavity in profile or if it was just from planes and clean-up. The Molls are quite deliberate, clearly. Are they John Sr or John Jr? That's a question that's still up in the air to me. The two pieces you've illustrated - they are exceptional rifles, and the quality of the decortive work would lead me to believe that they may be very late John Sr rifles, but it's still not possible to say for certain. John Sr and his son signed the rifles almost identically, we assume, if we're looking at two guys. Or maybe it was all one guy. Then there are later rifles actually signed "John Moll jr" that are assumed to be John III. I'd feel a lot more confident if a rifle looking like one of these ever turned up with the 'Johannes Moll' sig in large block letters, because I really believe they are the old man. U/nfortunately the only two of which I've seen are later restocks.
I see the Kindig Rupp rifle (top rifle) in a bit of a different light. It's very large and clunky, giant cheek, the furniture is a mis-mash; I see it as a rifle by a guy who is learning to work in the accepted regional style of the time (I'm going 1780s or maybe early 1790s) and trying to force that style on a lock, barrel and furnishings that are absolutely too large and not suited to that style. Seriously - just look at it. I think in one of the older posts I illustrated one of the earlier rifles with the same furnishings that I assume these came from - I totally see it as a restock.
I genuinely do not attribute the doming of the lid as being earlier or later. I've seen much later rifles with domed lids, and earlier rifles with flat lids. I think a lot of it just happened to revolve around what the stocker had on hand - castings? - or if he was working with sheet and then subsequently felt like forming a dome or just going flat. I don't attribute any dating to that characteristic at all. Keep in mind Herman's 1809 dated rifle still is carrying a domed lid, Neihart's 1787 is flat and the 'olive branch' rifle which I think is a Moll but some believe is a Rupp is probably earlier than both and carries a flat lid.
My opinion, and anyone can take it or leave it, but comparing the Kindig John Rupp to the Moll rifles illustrated is like comparing a VW to a Lexus. It's just a chunky, clunky, big gun made up of parts. and very attractive in its own way, but there is a professionalism evident in the two Molls here that is completely lacking in that Rupp gun. I think it's probably contemporaneous or possibly earlier than those Molls, but not by much and none of them are pre-War.