These links provide a quick way to access hardware profiles for Intel and Apple Silicon based iMacs on Low End Mac..

Early 2006 iMac	Mid 2006 17″	Late 2006 17″	Late 2006 iMac
Mid 2007 iMac	Early 2008 iMac	Early 2009 iMac	Mid 2009 iMac
Late 2009 iMac	Mid 2010 iMac	Mid 2011 iMac	Late 2011 iMac
Late 2012 iMac	Early 2013 iMac	Late 2013 iMac	Mid 2014 21.5″
Late 2015 21.5″	Mid 2017 21.5″	5K, Late 2014	5K, Mid 2015
5K, Late 2015	5K, Mid 2017	Retina 5K, 2019	See as a list