Hello @rokhlan,
the chances for support by /e/ OS are rather low, because there are no official LineageOS 16.0 resources. Even LOS 17.1 ROMs are only built as unofficial LOS ROMs.
The longer I have been working with the alternative custom ROM GrapheneOS, the more satisfied I get. However, the GrapheneOS philosophy is very different from /e/ OS.
However, the integration of the security patches into the hardened Android ROM is remarkably fast.