Rsync question

Hi there I have some limited access to a folder. I have no root access no sudo allowed so I can't use the preserve permissions options. In the folder I have some files either owned by user A or user B. I need to run two rsync commands, one as user A and one as user B. The command run as user A should only attempt to copy files owned by user A and the command run as B should only attempt to copy files as user B

Basically I'm assuming there is some sort of ls command I can pipe into rsync that can filter only files owned by the user running the command.

I'm an oracle DBA with enough to configure and build oracle on Linux but I'm a bit stuck in this one.