Have you looked at the deckplans produced over the last 40 years? 
There's a distinction between design and modification. Once a design has been engineered, modifications have constraints.
So, no. There's only one basic Beowulf hull layout. That's a specific deckplan.
But that does not prevent there being many different Type-A hull layouts. The Type-A is just a collection of design choices and you can draw up whatever layout that fits them.
As a well known example, the standard Suleiman Type-S and the Serpent Type-S.
Same CT design specs, different deckplans.

There's a distinction between design and modification. Once a design has been engineered, modifications have constraints.
So, no. There's only one basic Beowulf hull layout. That's a specific deckplan.
But that does not prevent there being many different Type-A hull layouts. The Type-A is just a collection of design choices and you can draw up whatever layout that fits them.
As a well known example, the standard Suleiman Type-S and the Serpent Type-S.
Same CT design specs, different deckplans.