In 7.1beta2 wireguard protocol was added. It use ed25519 as one of algorithm. Maybe it possible to add ssh support of this algo too?
wireguard and ssh don't necessarily share encryption libraries so support for certain key types in one of these services doesn't mean support for same key type in the other service. However the trend in IT is to re-use things and hopefully wireguard and ssh will share encryption library ... not only to provide same level of support for key types but to reduce size of install as well.