As a certified stoner, this is my contribution to the "who would roll the best joint in the 118" discourse!
(this is a hypothetical universe where first responders can recreationally use cannabis)
Starting with the man, the myth, the legend, Chimney Han. Everybody knows why they call him Chimney. He's the best at rolling in the 118 and is the designated roller in the group. Got most of his practice working at the karaoke bar, as he would light up with patrons outside. His favorite method is taking dabs because his tolerance is high.
Everybody who thinks Buck would roll a good joint is wrong. He's more of a drinker, and in college he had friends within his circle that knew how to roll. If he is forced to roll, he will use cones instead of papers because it's easier for his hands. His favorite smoking method is a blunt with a palm leaf wrap, because it reminds him of when he was in Peru. He has also experimented with homemade edibles once he got bored of making regular baked goods.
Eddie is a little better than Buck, as he had practice rolling cigarettes in the army. He didn't smoke until he started at the 118, and will indulge only when the rest of the group is. He prefers to smoke out of a bowl so the smell isn't very strong when he comes home to Chris. He is also a fan of Buck's special brownies.
Hen learned how to roll in high school. She's had years of practice and friends who smoked so she knows her way around. She stopped smoking when Denny was born and switched to edibles, so she's a little rusty. When the 118 are together she will take hits off of a blunt if its available.
Ravi knows how to roll, but not very well. He brings the weed to the smoke sessions to make up for it. The nice dispensary is by some of his real estate properties, and he also has a medical card because he used cannabis during his cancer treatments. He used to use tinctures and balms, but now he has a fancy vaporizing device that he loves.
Miss Maddie Han loves a good edible. She doesn't know how to roll, and was never shown how until she started dating Chimney. Her and Chim take edibles before date nights, specifically when they are seeing a movie or getting takeout. She has also assisted Buck in perfecting his brownie recipe.
Bobby does not smoke for obvious reasons. He knows how to roll and has known since he was a teen, but he does not participate in the 118 smoke sessions to maintain his sobriety.
Athena also does not smoke. As a police officer she feels that it is hypocritical to smoke. When she was in college she was with Emmett, who was adamantly against smoking because it was illegal. She stays away from cannabis because of her own experiences but mostly for Bobby.