Meredia can be recruited.

Path Diverges:
At this point you have three choices, head to the mission 22 at Vert Plateau, mission 24 at Capitrium, or mission 23 at Tremos Mountains. Reminder: No matter what order you choose, some missions will become unplayable. 
Choosing this path appears to have no effect on Chaos Frame. Mission 22 must be done before Mission 24 if you wish to play both missions. For further details on how chaos frame is affected check out the Chaos Frame Guide
Europea can be recruited. 
Biske can be recruited.
Debonair can be recruited. ​​
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According to the Chaos Frame Guide, choosing this path will drop your Chaos Frame by 10.

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Paul can be recruited.
Debonair can be recruited. ​
Ogre Battle 64 and all related material is (c) Quest/Nintendo/Atlus/Square Enix
Last Update: 7/13/2020
Addition Information from: Chaos Frame Guide, Prima's Ogre Battle 64 Guide, The Official Japanese Ogre Battle 64 Guide