I think Mage Hand Press, Warmage is the best rendition because it actually offers something unique outside of basically being a Paladin with Wizard Spells.
It handles the concept of a Swordmage by making it a Cantrip only focused caster, where you can flexible make the concepts around various aspects of cantrips, from spellblade cantrips, to just being a simple cantrip blasters, to straight up being a magical knight where you evoke your own sword and shields of magic, also has straight up support cantrip casting abilities.
This is actually new design space and unlike any other class in the game.