You have identified 4 core traits all galaxies have
Time
Tech
Magic
Environment
Spend time working on each to break down range of possibilities in each as you visit more galaxies.
Places to research
Nowhere
Your base home galaxy( for orgional crew)
Galaxies of other crew(Deacon and Ross)
Station
Super AI
NEXUS POINT 9 where they restrict tech to race TL.
Star Wars
Step one find the common trait lvl for most galaxies
Step find extreme levels for each
Find where each land from where already been