I use regular brake levers on my drop bars. I’ve hooked the right lever up to a cable-actuated squirt gun (remember the “Sir, will you be taking that weapon into the office” incident?) or a cable-actuated bell.
SRAM are my favorite levers. The hoods fit my hands best. I like the campy ones too, though they’re $300+ for a pair, so I don’t buy those.
I have a set of Ultegra brifters on the Tweed that are nice. It gives my hands something to do when they otherwise would be doing the devil’s work. The shifters are not connected to anything… that doesn’t stop me from using them though.
Hope that helps.
Pete