quote from Jeff ......….""They're glass so don't ring ………." I thought all of them were

but presumably meaning without any lead content.
IMHO I doubt that there's such a thing as a "slightly deceptive" glass - pieces are made as truly deceptive (toastmasters) glasses, or they are simply standard capacity glasses, but perhaps with thicker than average metal - as in pub/tavern glasses.
IMHO the correct descriptions for the cutting on the bowls would be …………
when there is a series of parallel cuts usually of concave shape (or possibly mitres) they would be called flutes …………...
but if they are simply cut flat, then 'slice cut' would appropriate.
I'd suggest there are too many glasses in this thread so might be some confusion when discussing individual pieces.
Usual old problem when discussing drinking glasses post 1830 - 1849 ………. available books to help - such as Bickerton with Georgian glasses - are almost non-existent.