Yes many futures are not "cash settled" but settled in the actual commodity.
This is why in rare occasions the price of a thing goes negative because trading in that thing you are contractually obligated to take delivery and people trying to unload that obligation sometimes can't find buyers until they are paid to take delivery. It happens when nobody really wants to buy a thing and there is no capacity left to store or ship. When you buy a futures contract and you don't want delivery you have to sell it to close your position, and rarely you have to give people large sums of money so you can close.
This is why in rare occasions the price of a thing goes negative because trading in that thing you are contractually obligated to take delivery and people trying to unload that obligation sometimes can't find buyers until they are paid to take delivery. It happens when nobody really wants to buy a thing and there is no capacity left to store or ship. When you buy a futures contract and you don't want delivery you have to sell it to close your position, and rarely you have to give people large sums of money so you can close.