Caffeine is very slightly negatively correlated with darkness of the roast. Dark roasts tend to have less caffeine than light roasts.

Also, drip/pourover/percolator/press coffee tends to have more caffeine per serving than espresso-based drinks. The longer steep time extracts more of the caffeine, and serving sizes tend to just be so much larger to overcome the higher caffeine per unit volume of espresso.

So in reality, the lighter pourover coffee where you have the roaster or barista talking about tasting notes tends to be higher caffeine than the dark, densely brewed bitter stuff.