Google phones are only popular in the US, but Android users are mostly outside of the US.

In Europe the most popular smartphone brand is Samsung.

Lineage supports basically all of their models.

Also: Nexus support is not bad

Nexus 6 and 6p are supported

https://wiki.lineageos.org/devices/#google

They even support all my Xiaomi devices, including a very old Mi pad second edition.

It's probably the OS that actively supports more devices in existence right now.

iOS doesn't even support all the iPhones.