Type1 vs Type2 hotfixes?

[solo]

What exactly is the difference between the two. I've gathered from reading numerous posts that the Type1's have the blue and white icon (Self-Extracting Cabinet) and Type2's have the colored icon (Win32 Cabinet Self-Extractor). But what is the defining difference between the two?

It appears they always require these switches (plus or minus a switch or two depending on preference):

Extracting Type1: /q /x:<path>

Extracting Type2: /c /q /t:<path>

Installing Type1: /n /q /u /z

Installing Type2: /q:z /r:n

...is this always true?

I've also noticed that for Win2k Pro post SP4 critical updates the only Type1 hotfixes are those are named Windows2000-KB######-x86-ENU.exe and all others are Type2 (or Type3?). So is this always the case that only KB named hotfixes are Type1 and all others Type2 (Type3?)?

Specifically, I'm referencing these files (Win2k Pro):

js56nen.exe -Type2

Q318203_MSXML30_x86.exe -Type2

Q822925.exe -Type2

Q823718_MDAC_SecurityPatch.exe -Type2

Windows2000-KB823559-x86-ENU.exe -Type1

Windows2000-KB824105-x86-ENU.exe -Type1

Windows2000-KB824146-x86-ENU.exe -Type1

Also has it been determined that Type1 hotfixes can be slipstreamed and Type2 cannot?