The notable thing about "Irish" bars, I think, is that there are so many of them in non-Irish places, compared to other types of "nation-branded drinking establishment."
Now you got me wondering if there is place in the world for "Wisconsin-style Taverns", complete with shorty-beer chasers for Bloody Marys, beer brewer branding signage styled from the 50s, and dollar bills stuck to the ceiling by darts...
Living in Dublin, I would be thrilled to find a southern California dive bar with hoppy IPA's, shuffleboard, and an outdoor seating area. For those who've been, something like Hamilton's in San Diego.
Some of them have the first and last (Beer Market near Christchurch comes to mind), but none have quite managed the shuffleboard.
After reading your first sentence I was going to mention Beer Market.
I was in Ireland for the college football game at Avia last September and my hoppy beer loving friends took up residence there for the couple of days that we were in Dublin. Great place.
Problem is that New Glarus is only available in Wisconsin. So the best Wisconsin beer option wouldn't be available elsewhere.
Another thing I've seen in a number of Wisconsin taverns and dive bars: small beer glasses that hold ~10oz (300ml) max that they give you with your bottle of beer.
I have definitely seen American-style bars in Europe and Japan. You get New York-themed, Californian, Hawaiian and generic American. Often with '50s decorations.
Most dives I've been to have two of the three, and in lieu of the bloody mary beer chaser they've got a 2 for one special on a shot of cheap whisky and a PBR.