Simpson,
All books are phonetic. The only reason for phonic reading schemes is to (as part of the process of mastering all phonics) to limit the range and type of phonic sounds encountered at any point.
So first books = only the fist, single letter, sounds, no alternative spellings.
Next stage = more single letter sounds.
Next stage = diigraphs, most common spellings.
Next stage - digraphs and alternative spellings.
As the stages go up, then 'rarer' alternative spellings are introduced.
It's like learning an instrument - if a child has learned middle C, B and A, then the tunes provided for them to play are those, as single notes. As they add new notes, then more music can be played ... and then there is a further stage in which those notes are combined in more and more complex ways....
Look and say books are the equivalent of saying to a child 'look, here's Ode to Joy in a full score version. To make these sounds, put your fingers down in these ways.'