does anyone know what is a six-level computer ?

Hi q8ysurgeon !

As far as I came to know about it from google.

A six-level computer just means it's a computer that is designed up to the 6th level of computer architecture.
Leveling starts at 0.

Level 0 - Digital Logic Level (The language talking directly to the circuits)
Level 1 - Microarchitecture level
Level 2 - Instruction set level
Level 3 - OS machine level
Level 4 - Assembly Language level
Level 5 - Progran-Oriented language level (Compiled languages like Java, C, Basic, etc.)

See the diagrams below to make it more clear


In general,

A multi-level computer describes the computer architecture complexity of the computer languages a computer is able to interpret and understand.
It goes from the lowest level which is the native language a machine can understand. But the lower the level, the more difficult it is for humans to understand and program. So you build a machine capable of interpreting higher level languages which are more human understandable. But because a machine's circuitry cannot understand these higher level languages, they have to be translated into the lower level instructions, so they also run slower.
Following figure show how an N-level computer architecuture seems.


Now I guess you can decide which Programmer do what work at which level of such computers.

And I am not clear about your second question i.e. with "hybrid level" . In what sense it should be hybrid?
Application and System Programmers sense
or
Language

Please clear about it. 😀

Thanks

[PS: Source of this information is google.com ]

Thanks alot my friend that was really really helpfull!

I really appreciate the effort