The 3600X is sandwiched between the dark red of the 3700X and the lighter red of the 3600 non-X. The order is the same as the legend.
The amount of 3600X chips sold is tiny compared to the 3600! Really, really tiny... Look at July to October on your own chart!
Not literally "nobody" but that chart actually shows clearly how awful the 3600X was, and the sales were too
The chart shows 3600X sales spiking in Nov and Dec before dropping again - I can only assume they had a promotion on 3600X during those months.
I really don't see that chart as evidence for anything other than consumers flocking to both the 3700X and the 3600 non-X. They are about 1/2 the total sales in just two SKUs!
And funnily enough these are the SKUs missing from the 5000 series.
AMD is gambling on upselling us all to higher margin products. A big gamble.