There are a couple of things you might do. One is to look at your config file. This exists as .config
(notice the leading dot indicating a "hidden" file) in the top level directory of your kernel source. It is frequently also copied as a non-hidden file to /boot
when you install a kernel. You can search through this file for all lines containing "=m". For example you can use grep:
grep "=m" <name of file> | less
The possible drawback I see to this is that you might have some trouble mapping the variable names into the name of the modules.
The other thing you can do is look at the directory listing of all of your compiled modules:
ls -R /lib/modules/$(uname -r) | grep "\.k*o" | less