The inheritance tree of all Fire Monkey objects.

Allow me to present a list of all package objects FMX in the form of a graph.
RAD Studio 10.1 Berlin Version 24

FMX.graphml - you can open this file by Gephi https://gephi.org 

FMX.svg - you can open this file by Internet Explorer

FMX.pdf - you can open this file by Adobe Reader https://get.adobe.com/reader