Android version is not the same as Android SPL.
https://gitlab.e.foundation/e/os/releases/-/releases
This /e/OS v1.19.1 version includes the Android security patches available until December 2023.
Lineage lineage-20.0-20240109-nightly-instantnoodle-signed.zip had the same December SPL. https://download.lineageos.org/devices/instantnoodle/builds; more recent builds are Jan 2024.
What /e/OS ROM are you installing ?