Only jet I'm aware of that ditched mostly intact is ALM flight 980, a DC-9 which crashed in the Altantic in 1970 after running out of fuel. There were 40 survivors out of 63.

Ethiopian Airlines 961 was a 767 that ditched in the Indian Ocean after running out of fuel during a hijacking (the hijackers thought the maximum 767 range always applied). It broke up on impact. 50 out of 173 survived. They were fortunate that they were close to shore where a lot of people saw the crash and were able to respond.

Jets with wing-mounted engines may be more at risk in a ditching. The engine nacelles can catch the water and spin the jet around.

Actual ditchings are rare simply because there are few situations where a jet (a) must land right away, (b) is over water, and (b) is still controllable. Planes that have explosions (TWA 800), fire (Swissair 111), or flight interference (EgyptAir 990) just can't land in a controlled enough fashion.