Re: Want to explore the smoky whiskies . . .
Why is iodine an issue for you? Are you thinking more along iodine as a medicine or more along those from seaweed. If seaweed, then you would expect to find these in the south shore Islay whiskies.
Some thoughts on the younger versions:
Bowmore: drift towards maltiness, floral component (heather, lavendar, roses), and some smoke but more like wood smoke than peat smoke
Laphroaig: more recently I've been getting apples, some big peat smoke (but sometimes a little softer)
Ardbeg: plenty of smoke, some oiliness (diesel?), briney, melons
Lagavulin: bright maltiness in the bourbon cask 12s, plenty of peat smoke, vanilla, bacon occasionally. 16 is sherried so look for some caramel notes in there.
Caol Ila: oily, bacon everywhere, earthy, some vines
Bruichladdich, Port Charlotte: all over the place from virtually no smoke and peat to very heavily peated. Usually has a strong malty character unless you get a wine finished one
Kilchoman: young, strong peaty smoke
Bunnahabhain: just a touch of smoke unless you get a peated cask, strong malt character, with a bit of citrus
Talisker: spicey characteristics, look for various pepper, malty, waxy, whisps of smoke that are slightly stronger than HP
Ardmore: much more subdued compared to Islays. Earthier peat.
Benriach: there's a slew of these ranging from the Curiositas to the peated and finished 15 yos. Not really my thing here.