They look like a common "garden" moggie to me.
With respect to webbed feet, every cat has a fold of skin in between its toes. Just take one paw in hand and part the toes to see the web.
Spotted tabbies. Well, these are a variant of the mackerel (striped) tabby, where the spots are just broken stripes. And this is the "default" tabby pattern in the domestic shorthair as it is dominant over the classic tabby (the one with the swirly pattern). So nothing ultra special there either.
The Bengal coat is very distinctive in texture, colour and pattern. It also gets passed down to some extent in oops litters but those kits are just bog standard tabbies. Also, the Bengly voice - once heard, never mistaken for anything else...
Anyone who knows anything about cats should be able to call their bluff, but of course, there are suckers who'll fall for this but as the old adage goes, caveat emptor.