Which type of planets have the most moons? Where did these moons likely originate?

Jupiter and Saturn

Explanation:

Giant planets -

Giants planets have maximum moons,

for example,

Jupiter and Saturn.

Jupiter have 63 moons (according to 2009 calculation), where, 8 moons are the regular satellites, 4 moons are spherical and large, 4 moons are small and close to Jupiter, in addition to it Jupiter have 55 irregular satellites.

Second highest moon is with planet Saturn, with 61 moons.

Many of moon's are thought to have been captured from the small-body population during the formation of the solar system.