I just checked to see what the problem is, They all appear correct in the data as it is now, is it possible you are looking at old data? The ranger class template is a medium missile based ship. And as far as i can tell all the rangers a pointing to the correct blueprint.
The your Rangers, the "CPU-MS" ships, are pointing to
RangerBlueprint
ProtoTypeRangerBlueprint
RangerLBlueprint
FrigatePBlueprint
AIDefenseRangerBlueprint