https://www.macrumors.com/2011/08/10/apple-releases-migration-assistant-update-for-mac-os-x-leopard/
Following on earlier releases for Mac OS X Snow Leopard and Windows, Apple today released Migration Assistant Update for Mac OS X Leopard. The...
mac os xmigration assistantapplereleasesupdate
https://www.imore.com/ipad-pro-so-great-you-can-run-mac-os-x-105-leopard-it-only-if-you-hate-yourself
You can run Mac OS X Leopard on an iPad Pro if the urge takes you. But you'd probably be better seeking a remedy for that urge instead.
you can runipad proso greatmac