The photographer is probably "John Milton Van Norman" also went by Van Orman. He immigrated to the US from Canada in 1884 and is listed as a "photographer" in the 1886 Buffalo City Directory.

The players are a mystery; so I thought I'd start with an easy one : Dan Sweeney played one season for the Louisville Colonels in 1895 according to baseball reference. Can't confirm it's the same man, the image is pretty poor on baseball reference but he was known as "Midget" Sweeney when he played for Louisville according to the Washington Times (April 28, 1895).

Sweeney was born in Philadelphia. As mentioned before I thought school team. So I started there. Found a Louis O'Connor, Frank Whalen, Charles Schanne (Shane), & John McCur in Philadelphia in the 1880 & 1900 census (all born between 1867-1869). But, no Baritot, though that was a very popular name in Buffalo. With Baritot and Adler there were just too many names to cover. Noone named Champalan in Pennsylvania but there was a Joseph Kimpelen born in Philadelphia 1868.

Photographer is from Buffalo, but many of the players may be from Philadelphia......Not sure how that makes sense, but hope that helps. Good luck, and wonderful photo.