I have a smooth-top electric in our current home. I greatly miss the gas cooker in my previous home. I’d rather cook on the two-burner on our boat than the smoothtop.
I cook in a lot of different kitchens (galleys actually) for work. I’m seriously unimpressed with induction. The best thing going for it is that isn’t as bad as resistive electric.
I have two gas-fired catering burners similar to this https://www.amazon.com/GS-3800DF-Burner-Spiral-Portable-Carrying/dp/B00BS4RP8W/ref=sr_1_53?dchild=1&keywords=catering+burner&qid=1593798549&sr=8-53 (mine came with plastic cases). I bought them for moving brand new boats when the yacht broker doesn’t want us to use the built-in cooker. They’ve also been handy at home during power outages. You can get the gas cartridges at WalMart and most big-box hardware stores.
There seems to be some confusion between propane and butane. In practical terms there isn’t any. Both are liquefied petroleum gas (LPG). The chemistry is a tiny bit different. The heat output is the same. If you’re cooking above the Arctic Circle there can be some issues with getting butane to out gas. Note that what we buy as propane is a mix of propane and butane, mostly propane and what we buy as butane is a mix of propane and butane, mostly butane. The expensive bit for the portable burners is the gas cartridge, not the gas. You can get adapters for some burners to run off a conventional 10# or 20# propane bottle. No jet changes or anything else.
Wok cooking has come up a few times in your thread. Flat bottom woks don’t work well for cooking and are even worse on induction than on resistive electric. A real wok works fine on a portable gas burner.