From the developers side it would be good idea to make all codes accessible despite the chosen playstile,only reason to exclude some would be a practical joke or a mistake(which would be fixed by now).
Some codes are hard to figure and are borderline guessing,meaning they can't be actually found,they are subtly implied from surroundings.Other ones can only be found during certain events and later get locked out.
This site has those 2 code you mentioned listed,but again as it usually goes it misses some codes that wiki has.
The password for "Alice Gardens Basement" is marked with question mark on the wiki,and it isn't even mention on the site I linked,but after quick search another site pops up saying that password is dnkyhoeT
The amount of the codes found online sounds promising,but props if someone manages to verify all of them.