i've used lineages os with micro g and /e/OS too

they're pretty similar
with some differences ... not really security related

/e/OS dosent have the feature to change the accent color
it comes with munera apps preinstalled
the camera app in lineage os is way better
e/OS homescreen just have 1 page for widgits
e/OS dosent have that audio manupulation app preinstalled
and last
/e/OS comes with Advance Privacy ... its just 3 options to try protect users from app trackers and ads ... hide geolocation and ip

a little note ... the app store dosent works sometimes ... it never worked for me and the map app sucks .