While the pancreas is well known for its production of the glam party drugs INS & GCG, it really puts most of its efforts into producing a range of industrial-strength enzymes that run down the pancreatic duct as "juice" into poop near the start of its journey in the duodenum.
CTRC:p―chymotrypsin C―Human Protein Atlas mRNA tissue distributions & GPMDB protein tissue tabbulations. #proteomics
Even though there are quite a few of these digestive enzymes that are primarily for use in feces, I can't find any gene name that reflects this localization as part of the name: it seems as though no one wants to suffix their lab's favourite money-maker gene "XYZ" to form the more accurate sobriquet "XYZ fecal protein".

If you are interested in human proteins secreted into the gut, you might want to take a look at

PXD000506
PXD003907
PXD005574
PXD005619
PXD005969

These studies were meant to study bacterial proteins in feces, but they have some very nice observations of human-source proteins en passant.

@RonBeavis cRAPome?
@MattWFoster Already taken, although for a different purpose. https://reprint-apms.org/?q=chooseworkflow
Welcome to CRAPome 2.0 | CRAPome

@RonBeavis oh I thought that was you too. Different craps it seems.
@MattWFoster I am well known for being full of it! 😱