Using the standard of owning media & news, China is certainly front and center.
Not going to argue about Saudi's impeccable human rights record. But you have cause & effect reversed. Saudis are benefiting from the USA's largesse because it's in USA's interests are more aligned with the kingdom at the moment. Saudis don't dictate US foreign policy. If the USA's position changes, then Saudis are left twisting in the wind, no matter how much cash the princes throw around.