isn't it weird that most of today's computer still kinda have the same design that the apple II ? or was there other computers as small as the apple II before ?
The Apple II is one of a number of machines at the time that had the system-unit-plus-keyboard as a base on which a matching monitor was put. The HP 9845A and PET 2001 for example.
Later CP/M systems often had the system unit built into the monitor - and sometime the keyboard as well in systems like the Intertec Superbrain.
though back in the day it was the PET's that where big - though some of the CPM systems could be bulky