I'm looking for a table of CentOS versions and corresponding default password hash algorithms. Google searches didn't reveal any matches that look like they have all the information in one place.
Ubuntu publishes a table like the one I'm looking for on their wiki.
EL5 and previous versions used MD5 password hashing. EL6 changed to SHA512 password hashing by default. You could put that in a table, but it would be a very small table...