External Clock for AD7193 ADC
I'm interested in where you found the statement that a sine wave clock input is tolerated. What I found is:

Alternatively, the MCLK2 pin can be driven with a CMOS-compatible clock and with the MCLK1 pin remaining unconnected.

I'd follow this recommendation and choose the LVCMOS version of the oscillator. In general, I'd use (LV)CMOS oscillators as digital clock sources, except maybe if lowest phase noise is required.