Define a type which have to allow key of an object inside an array from a generic type

Question

I'm trying to define a generic type for a component and I want to allow only the keys of an object for the name property of MySubInterface.

The issue I'm facing is that the type the interface receive is an array of Objects. I've tried to use something like

name: Keys[number]

But the result is an error "Type 'number' cannot be used to index type 'Keys'".

The type is something like this

unique symbol | keyof { email: string; type: EmailType; isPrimary: boolean; }[]

and these are a sample of the interfaces

interface MyInterface<T, Key extends keyof T>{
    inputs: MySubInterface<T[Key], keyof T[Key]>[];
    name?: Key;
}

interface MySubInterface<T, Keys>{
    name: Keys
    component: (props: ComponentOptions<T>) => ReactNode
}

Some idea on how to get the list of keys in this case? Thanks