Forward emails to specific mailboxes to other recipient address

Hi,

I am currently using a google workspace with gmail. Some of my family members use other email providers but I would like to switch to Apple iCloud+ and setup my own domain.

Can I use some Apple Family users with my domain and iCloud/Apple mail (e.g. a@foo.com, b@foo.com, c@foo.com) and still have some other addresses (e.g. x@foo.com) being forwarded to another email (e.g. x@gmail.com)? With Google Workspace this can be done with "Default routing".

Any help would be very much appreciated!

Andy