Hello OEMsystem:
Yes, crystal oscillators (XO) has different grade in noise,
most likely, phase noise, but XO makers tends to call it "jitter".
For fundamental tone XO (1MHz ~ 30MHz roughly),
jitter might be anywhere beween hundreds of ps to under 1 ps.
And untra low jitter (communication grade) XO is very expensive.
But sorry, all the papers are about how to start-up, low current,
temperature compensation,... almost nothing about how to design a
"uLtra low jitter XO"
Guess we need help from a very special group of experts.