FIREing abroad: cash or In kind transfer?

Green card US resident moving back to Canada.

Are there any tax advantage in performing an in-kind transfer instead of selling everything here and doing a wire transfer?

I'd like to also hear stories about IRA/401k accounts and if you kept them in the US or were able to take them out. Any challenges/benefits?

Politics aside, I'm hesitant to leave everything here while actively living in a different country as I would lose my green card status. FYI I'm also 1 year away from being able to get citizenship through naturalization.

Happy to hear your story if you had a similar experience!