I don't keep up on the exact rankings of the Oxbridge colleges, but there is a huge difference in the wealth of the richest colleges from the average of the rest.

Long before Yale, King's College Cambridge pioneered sophisticated investment management: Keynes turned around the college's assets on the 1930s during the Great Depression to become level with the traditionally wealthiest Cambridge college, Trinity, which had long had vast property assets.

https://www.nber.org/papers/w20421