i do the same thing as you. the pizza is great. it does have that artificial vibe to it, but its totally do-able. if you were ever a fan of McCain Elios or Bagel Bites, youll liek the pizza. i happen to love it with my dirty martinis. its gotten to the point where i dont prefer to have a dirty unless ive got my pizza vape!
blue cheese is my next savory vape. ive got some concentrated flavoring from Good Prophets that was just too good of a deal to pass up. pennies on the dollar. i figure this will also go well with my dirties, as a filthy martini is just spectacular. (filthy martini is a dirty with cheese-stuffed olives, typically blue cheese but also could be gorgonzola or feta)
i tried the roast beef and didnt care for it. same goes for bacon. they might however be good in combination with another flavor. thats why i think pizza works well because its got a medley of flavors. and you really do get a salty/savory/dare i say umami flavor profile from it.
i havent tried garlic bread but im willing to bet itll work. i suspect it to behave much like the pizza does.
speaking of savory, buttered popcorn is great too. its a bit of a lighter flavor so dripping or even dropping it into a RBA would be beneficial.
and then youve got the savory + sweet vapes. things like peanut butter cookie and Nite Lite Vapor's Gold fill this category. sure theyre heavier on the sweet side and less on the savory, but have no fear, the savory is there and its mind-blowing.
enjoy!