MNT Reform Laptop/Eoma68 Laptop are the only good options if they ever get
released that is...
;)
I am hopeful they will in the future, but I am not sure you will get any
noticeable security boost in arm vs intel for this reason:
https://www.tomshardware.com/news/quantum-computers-encryption-decades-researchers,38819.html
https://www.tripwire.com/state-of-security/featured/will-quantum-computers-threaten-modern-cryptography/
https://www.digitaltrends.com/computing/mit-five-atom-quantum-rsa/
Just a taste of what is to come...