Alternatives to Google Phone

Works with MicroG?

Works if you flash magisk module " Google dialer framework"

Open Source

AOSP/Lineage Dialer

Simple and reliable. Already included in many custom roms

Aurora Dialer (not released)

Dialer

A lightweight app for handling your calls, no matter where are you. Comes with a handy call log for easy call initiation.

Koler

uniquely stylized phone app with customizable features

Available in the IzzyOnDroid repo

Closed Source AntiSpam

TrueCaller Modded

⚠ Privacy Alert: It still connects to external servers