the universal state [Psi] always evolves unitarily), one first looks to (DetProb).
But it is clear from Section 4 that (IndProb) is more appropriate than (DetProb): the main missing ingredient is an account of persistence for branches.
It will be clearest to lead up to this contrast by setting the Bohm and modal interpretations in the context of Section 5's (DetProb) and (IndProb).
The Bohm interpretation fits (DetProb) very well, at least for non-relativistic quantum theory (the most studied case).