Object and type class

[Uchikago]

Hi, i'm a bit confused about type class and object class. I know that every normal class and built-in type are instance of type class and inherit from object class (is that correct? please correct me if i'm wrong). But when i try this:

print(isinstance(list,object))

It printed: True

Why is that? I thought object is the base class of list not the class which list was created from !. Can anybody show me the relationship between object class, type class, normal class, built-in type like list and string