Druid/Ranger summons are controlled by Nature and not their alignment or Deity if they have one. Here's a link to
druid summons. Druids dont get elementals through their summons but they can cast
spells that bring forth elementals and can go into
elemental shape.
Clerics summons are controlled by their Deity and Arcane summons are controlled by their alignment but arcane casters can
change it to their deity if they are very devout.
*okay gota little crazy with the links sorry