Would anyone be able to specify if the below mentioned systems are as closely related as I believe they are?

We all consider the NES and the Famicom to be "the same system", although they cannot directly play the same games - the hardware is very similar, and a simple connector-adaptor in this case all it takes to be able to play Famicom games on a NES. In the below cases, would you think that the mentioned systems "are the same" - and why/why not?

Saba/Fairchild
SG-1000/SMS
Famicom Disk/NES
Oddyssey2/Videopac


Please also specify which of the below systems are discrete logic and which are education-stuff-only - if any of you know that is.

1292 Series
Action Max
APF MP-1000
Bandai TV-Jack 5000
Bandai TV-Jack 8000
Captain Power
Casio Loopy
Entex Adventurevision
Epoch CassetteVision
Epoch Super CassetteVision
Gakken TV Boy
Hanimex 7900
Memorex VIS
Odyssey
PC-50X Series
RCA Studio
Socrates Educational VS
Tomy Pyu-Ta (Totor) Jr.
ViewMaster InteracctiveVision
Vtech Creativision
WebTV