Short Answer: No

Long Answer:

Pixels are currently the only phones meeting basic security requirements while also providing proper alternate OS support. There are other phones doing one or the other but not both. We want to support other devices but we aren't going to accommodate a massive security downgrade.

In most casrs those devices don't meet basic security requirements which is why we don't support them due to the purpose of GrapheneOS being providing a highly private and secure mobile device.