For those interested in animal stuff, also check out agricultural economics, which is mostly a separate field (probably looked down on by many mainstream economists but still legit). Jayson Lusk at Purdue is a good person in this area. He has a book on the economics of farm animal welfare.
Edit: what I said about being looked down on was not based on really any evidence so I should take that back.
Maybe stating the obvious, but I believe corporate governance is an academic subdiscipline of finance/economics. From quickly looking on google scholar, here’s a textbook and an (outdated) 1997 survey article. I’m not familiar with that literature, but I’d guess the normative framework (if any) taken there is the usual sort of loose willingness-to-pay-proxied quasi-utilitarianism found in most subfields of economics besides public finance.
Possibly relevant: “Effective Justice” paper.