I have been measuring chain survival rates for years.
Tried about every lube on the market. Its a pretty organised test process in that I use the same 105 chain every time and ride a mix of gravel and road on the same Gravel bike. Chains with Squirt have lasted as little as 850 miles before the chain gauge drops onto the chain past the max wear mark. Best to date until now has been with WolfTooth WT1 2800 miles.
The picture below is the chain gauge in the same place as when the chain was new. This chain has done 2250 miles and there is no length wear at all. I have never felt that I have needed to lube the chain. It not felt dry or gritty. Its not been cleaned at all other than a wipe with a cloth. I have lubed 4 times and used 1/3 of a bottle to date and I have lubed only because after 500 miles I have felt that I should.
Nice one Josh. Its looks like I will be buying less chains.