M's like the only wedding inspired song I can think of her so I guess it's fitting
I don't know for Kobukuro honestly @_@ , I think Tsubomi can be considered ?
ARASHI - Oh they can sing One Love to me anytime of the day xD xD . I always remember the scenes from Hana Yori Dango final when it was played at the ending credits of the movie

& their live performance & the PV is just
sad that there's no chance of me to see a Domoyoji Jr