What about google phone?
I don't see Google here:
The Titan chip makes it very secure especially with GrapheneOS .I recommend Google Pixel 3a or upcoming 4a.
Even if you're not a fan (I wasn't too before I buy)
It's best phone security wise and also it's supported by GrapheneOS (currently 3, 3XL, 3a + 3a XL) which was my reason to buy a 3a.