There are indeed a lot of Macintosh models, for the existing models available:
Apart from local variations in keyboard layouts all Macintosh models are the same. (See links below)
The internal codename of the first model of the machine was "Macintosh", it used a Motorola 68000 microprocessor and had 128K of RAM. When released it was named the Apple Macintosh. When the next model, the Apple Macintosh 512K (with 512K of RAM) was released the original model was renamed the Apple Macintosh 128K. Later models were also called Macintosh, but over the years the name shortened in usage to Mac.
Sandisk have a range of products many of which will work on a Macintosh computer.
Windows is an operating system. Versions include Windows 2000, XP, Vista, and 7. The Macintosh is a computer. Models include Mac Mini, MacBook, MacBook Pro, MacBook Air, iMac and Mac Pro.
The Macintosh is compatible with many online games. If the games uses open standards then the Mac will be compatible.
A Macintosh apple.
There is no macintosh orchid.
The correct spelling is Macintosh.
Alex MacIntosh's birth name is Alexander P. Macintosh.
Katie MacIntosh's birth name is Katherine Elise MacIntosh.
Laird Macintosh's birth name is Laird Macintosh Rattray.
Stewart Macintosh's birth name is Stewart David Macintosh.