Warbler Guy, are there any New World warblers that occur in their own family and where shall I look?

The Olive Warbler, Peucedramus taeniatus , is a small passerine bird. It is the only member of the genus Peucedramus and the family Peucedramidae.                      

Answers: Latest Fab Four Warbler Photo Quiz From 9/10/15 Post (right side column here)

Here's the answer for those folks who voted at the latest quiz (right side column referring
to the 9/10/15 photo quiz that you can see by scrolling down to that date where the four photos appear).

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From top to bottom photo, the images are these wood-warbler species (that I am lucky to see
while birding in WI, (and, to "impress" birders that I guide on a tour the songs of these species are some of the more easier ones to distinguish in the Parulidae/wood-warbler family):

Pine
Prothonotary
Worm-eating
Yellow-breasted Chat (in weird light, I agree: Its breast looks orange and NOT yellow!)