Well - all of those elasmos in a single 350 gallon pool/ tank is a bit of an overload. But by the way a 6' diameter pool x 2' deep equals about 420 gallons.
The coral & marbled catsharks can easily live in the same pool/tank as bamboos - they generally come from the same area(Indo-pacific), and require the same water conditions(temps, salinity, & habitat).
The only ray on your list that could work with them is to Cortez. as it to is a pacific species. But it's general hardier to keep than any of the sharks on your list. In fact - all of the rays are on your list are hardier to keep than the sharks are.
The Yellow ray & the Guitarfish are both atlantic species.
Generally mixing atlantic & pacific species together is a Big NO NO. Each species may carry parasites or diseases that are native to it(therefore they are immuned to them), but which the species from the other ocean may have little or no defense. So in effect you could possible have a big die off in your tank/pool.
Your best bet - go with a tank/pool for the sharks only. The Brownbanded bamboo, with a Coral & Marbled catsharks will be enough - for a 6' diameter pool. -If you still want the rays then put the yellow ray & guitarfish in one tank, and the Cortez in another.
Your sharks & rays will be happier, for it.