Arcades, the Strategist and Felothar the Steadfast are the two most popular, but you can also look to Doran, the Siege Tower, Doran, Besieged by Time, and Plagon, Lord of the Beach as some secondary choices
Ratadrabiks supposed to circumvent some combos by creating non-legendary copies of legends that die, but Boromir, Warden of the Tower works around this
Finally, another archetype where white gets better and better is the auras/Voltron archetype , which consists of piling auras or equipment on a single creature for the win
What's awesome is that you can choose the same effect multiple times so it's a superb option going first or second depending on the scenario you're in
5D's Ride 26: "Premonition of a Fierce Fight...!!" Yu-Gi-Oh
Fairy] LV6 ATK/1800 DEF/2000 This fairy uses her mystical power to protect the weak and provide spiritual support