I have a Google Voice backup(Titanium and TWRP) with my contacts that are lost from my Google account and I've been trying to recover them with all the associated data(pic/birthday/etc). I've had no luck on my own or asking elsewhere.
https://www.reddit.com/r/androidapps/comments/mqeb7n
https://www.reddit.com/r/androidapps/comments/mqeb7n