I'm only following the subject casually so I might be biased to have incomplete information but apple is seemingly worse that it's peers when it comes to repairability.
A quick Google search takes me to a page where Samsung lists official resellers of parts for their devices. The selection wasn't great but as far as I know apple doesn't do even that. Correct me if I'm wrong.
Apple has been in litigation in my country trying to block a independent repairer from procuring parts(think it was refurbished original screens).
I haven't heard of any Android phone manufacturers serial linking parts the same way apple has. At least not to the same extent.
TBH, I think most of the smartphone manufacturers are worse than Idd want them to be, but I definitely think Apple is among if not the worst of them when it comes to repairability