I believe the "Sharkbite" fittings are all the slip on type.There are two types...the easy slip on connection that goes over pex, and the type that requires a crimp connection that goes inside (think barb fitting) type.
Barbed fittings are available as well and at least 2 different types of clamps are available; typically stainless steel (as shown) and copper bands. There's a related discussion here: https://www.hearth.com/talk/threads/pex-crimp-rings-copper-or-stainless.127819/