I would say the list is: carbon dioxide, methane, urine, fecal matter, cerumen (earwax), sweat, and sputum. I would not count vomit, tears, or pus because I understand waste products to be the byproducts of normal metabolic processes. None of these things are expelled as the result of normal processes, though.
Vomit isn’t a byproduct so much as what we call the mix of stuff that comes out when we get sick. Lacrimal fluid (tears) stays on the eye and returns to the body when all is normal. Pus is maybe a borderline case. Dead leucocytes are part of the natural healing process, but healing might not count as a normal metabolic process (more of a special metabolic process). I guess I could go either way on that one.
I definitely wouldn’t count semen or vaginal fluid because they aren’t byproducts. There the main product themselves. They get expelled, but that’s part of their function. They’re not expelled because they are leftovers. Also, thinking of semen and vaginal fluid as waste products seems like it could inadvertently lead to some pretty sex-negative feelings. It’s that kind of idea that makes people think sex is gross, especially oral sex. And I’m just not down with not going down.