My mom was addicted to Campbell's Pepperpot. We always had a healthy stockpile of in the cupboard. I loved it, too, until I found out what tripe was. My grandmother made it from scratch back when it was an institution.
Walter Staib makes "West Indian Pepperpot" at the City Tavern but I've never tried it.
As for snapper soup, no canned can compete with fresh. The Country Squire Diner on Rt. 3 in Broomall makes their own and I'll still go out of the way for a bowl with a healthy dollop of sherry.
There is the Polish version of Pepper Pot soup called flaczki is available at Super Deli, 2625 E. Allegheny Ave., Philadelphia in the Port Richmond section. Sold by the quart & can be frozen. I love Pepper Pot & find this a very hearty & meaty version. Worth the trips from the 'burbs, especially if you also plan Polish lunch at Syrenka's or in the restaurant at the front of Krakus Market on Richmond St. (they have Flaczki also). As for snapper soup, a decent version is sold at Rieker's Meats, 7979 Oxford Ave., Philadelphia in the Fox Chase section.
Bookbinders specialties makes what they call a seafood pepperpot soup Not sure where it is available retail.
Also, there is a review of Campbell's pepperpot soup on Amazon.com that states that it was discontinued in 2010.