I'm a big big big fan of the spear
Weapon design is something they are masters of. All 3 feel very distinctive and offer Kratos a new bag of tricks. After playing with Atreus I found myself wishing Kratos had more range options and the Axe and the Spear provide that in different forms.
Also, the spear feels super fast to use so it's really snappy from a gameplay point of view. love it.
I said it in 2018 the Leviathan Axe is one of the best designed weapons in gaming - not from an aesthetic perspective, but mechanically. It's also future proof with the use of runes and stuff. Kratos already had the blades. So that's two iconic weapons for one character.
A couple more games in the next decade and maybe the Draupnir spear will be held in similar esteem