Hi - firstly thanks for some reasonably good pix - it helps a lot when trying to provide a useful reply - and good pix of clear glass aren't easy. There are few collectors of these short/dwarf ales who post here now so you may find replies thin on the ground, but some of the following information might be of use.
If you don't already have Bickerton's 'Eighteenth Century English Drinking Glasses - An Illustrated Guide', then it really is worth buying a copy - there must be pre-owned copies out there on Abe or similar - I imagine it's still the current volume for C18 drinking glasses, though a bit short on text. Unfortunately, from your point of view, most collectors go for the wines rather than ales, and having just looked in Bickerton he includes only about a dozen examples of ales, though since those with 'wrythen-funnel' bowls are most collectible then the majority of those are wrythen examples - and sometimes it seems used for cider and perry.
Date wise it seems these wrythen-funnel bowl ales occupy the entire C18, so the trick is to assess where a given appearance fits. There is a small publication (1978) from Stephen Parry 'Dwarf Ale Glasses and their Victorian Successors', from which it's worth quoting an extract as follows ............."Trubridge ('English Ale Glasses') illustrates an example that he dates 'c. 1860; my own feeling is that only a few wrythen ales are nineteenth-century, and that any made after 1840 are very exceptional".
Parry speaks about the pontil and gadget marks - and of the latter he says "it leaves a Y-shaped-scar" - though we now know that Y and T marks are the result of cutting away the residue of glass from under the foot with shears - as opposed to the gadget mark which will only ever be seen on the upper side of the foot.
All of which is to digress from saying that the opinion of the experts is that short/dwarf ales appear only rarely in the C19 - that is apart from those made to deceive as to age.
On balance, ales from first half C18 are probably more likely to have a folded foot - and Parry says " ........ the neo-Venetian wrythen ales all have folded feet ............. " - he was speaking about examples included in an exhibition which can't be reproduced here ... but equally many from the period in question have plain non-folded feet - the folding of the outer edge was a common Venetian practice on glass and it gave added strength to the edge of a rim or foot.
And ........ just to confuse you even more - the folded foot is a feature found on some glasses - apparently - until early C19.
Dwarf ales as their name suggests are generally less tall than short ales, but here again heights for both can overlap and the entire range form both types might be anywhere from 4.25 to 6.5 inches - champers flutes are going to be taller.
The shape of the foot - whether slightly domed or flat can aid with dating - Parry says "a flattish foot, whether folded or not, is unlikely to be earlier than about 1780.
Examples where the wrythen decoration is taken to the very top of the bowl is less common than otherwise - whether this feature was less popular due to the sensation of smooth glass being more acceptable on the lips I'm not sure. It's perhaps unusual that all three of your examples have been made in this way.
All things being equal, and looking for some way of dating your glasses, Bickerton suggests that wrythen twist taken to the very top of the bowl indicates c. mid C18 - Parry looks to be saying c. 1780 for a glass with more of a quilted appearance (similar to those here) to the wrythen effect. Often, dating can be subjective to some extent, and there's no doubt that experience is necessary in order to feel safe and confident in making assertions.
All of which comes with time and much looking at these things - partly to understand what the real deal looks like, and equally to get a handle on the spurious examples.
the above are only my thoughts, there are others here who hopefully will look in and provide more definitive comments - and don't forget to buy a few books - and read them!! best of luck.
P.S. As to origin, can't be certain about a particular country, but as likely to be British as opposed to anywhere else.