Linux version v.s. 32bit/64bit

Where can I get a list that maps the each Linux version to corresponding 32/64 bits model?

e.g.
OS -> Model (ILP32, LP64, ...)
RHLE3 -> ?
RHLE4 -> ?
RHLE5 -> ?
...

It would be better if there is such a list that contains most of current UNIX OS versions.

Thanks a lot.

It wouldn't be a list, it would be a multi dimensional array with at least three axis,

distribution
architecture
release/version