
Kendaan |

I was checking this feat, which allows youto change a memorized spell for a summon spell of same levle (or heightened tosame level) that is on your spell list.
The important thing is, as written it seems you don't need for your familiar to know the spell? So with that feat, by an extra 10 min of preparation Witches get access to all summon spells from their chosen list?
It's turning a kinda meh spell in a really good one for a summoning Witch!

BishopMcQ |
It calls out "Choose one summon spell (such as summon animal, summon construct, and so forth) that appears on the spell list of your spellcasting tradition."
It does grant you all levels of that spell based on what you swap out, but only the one type.

QuidEst |

It calls out "Choose one summon spell (such as summon animal, summon construct, and so forth) that appears on the spell list of your spellcasting tradition."
It does grant you all levels of that spell based on what you swap out, but only the one type.
Based on the examples, all levels.