This role will install minio client latest version from the official minio website.
Discussion on GitHub : https://github.com/minio/minio/discussions/16808
They are the same thing. Some users like to rename mc to mcli locally if they use 'Midnight Commander' (mc) tool in their machines.
On Debian based systems mc in PATH does conflict with the Debian package mc.
Having both /usr/bin/mc vs /usr/local/bin/mc in the PATH is calling for trouble.
Hence for Debian systems the mc package is shipping /usr/local/bin/mcli
https://dl.min.io/client/mc/release/linux-amd64/mc.deb
FYI mcli is close but separated to mmcli from the modemmanager package.