I’ll start by saying that I’m an Orthodox Christian and detest the papacy, to disclose my position.

Here’s an Orthodox Christian iconographer wrestling with the issue of whether an icon with a similar theme (Christ carrying a sheep) is a valid icon, and concluding yes. https://www.pravmir.com/images-of-the-good-shepherd-icons-or-not/

I have a very long list of complaints about Rome and symbols they use, and this isn’t one of them.