The name reached its all-time peak in 2003 with 7 births ranking #2436. FALLING Recent data shows the name is currently falling.
Madisson is a modern spelling variant of Madison and shares the same surname origin. It feels familiar in sound but a little more customised in appearance.
Variant spellings like this became common once Madison was already well established. They offer a slightly different visual identity while staying in the same very recognisable name family.