They seem to me to be on the same wavelength, but for their respective cultures. I'm really not sure if the latter is exportable, especially to North America, because of the street slang (almost a dialect!), but there's no problem with Kiser coming back this way. I'd say that Kiser predates Dennis, but not by all that much.
It's downloadable from Gutenberg and readable on any computer with the programs Kindle and/or Calibre. There's a plain text version, but you'd be crazy not to get the illustrated one. The cartoonist is the Pulitzer Prize winner John Tinney McCutcheon, so Kiser isn't a nobody.
Here's how it starts, just to whet your appetite. If you're a C J Dennis fan, you'll enjoy it. By the way, you can download The Sentimental Bloke, or read it online here. Sadly, the great illustrations in the hard copy versions of it are not in the Gutenberg edition. They ought to be. Happily, that's no problem with Kiser's poems.