There’s more in 2 than 1 had. Most of it isn’t magic, like The Witcher or Mass Effect (though Dead Eye I’d say is magic), but there are a bunch of skills to learn, as well as weapons to purchase that give essentially Stat upgrades and unlocks to find. They’re more diegetic in RDR2 than the other games listed, but I’d say that’s better for an RPG, not worse.
They are not ARPGs though. That’s Diablo type games. They’re Action Adventure games, with RPG elements. I don’t think they should be classified with the RPGs because they have very different goals, even though they use similar mechanics.