I like the look of 100% profile tires, and was shopping for some recently. The following is a list of exclusively 100% profile tires, although some makes and models come in modern metric "reduced profile" sizes too. I'm only listing 19" rim tires and only sizes 3.00, 3.25, 3.50 and 4.00-19 on this list. If a particular tire also comes in 18", 100% profile sizes I put a "YES" in that column. Manufacturers site links are included, if folks want to do more research. If the manufacturer didn't list information, like whether it was a Front, Rear, or both, I don't list the information either. I have no opinion about the quality, suitability, durability, etc of any of the tires listed.
I found quite a few more options than I had imagined I would.
Make Model F/R 19" rim size 18" sizes Link
Avon Speedmaster MKII F 3.00 3.25 3.50 No
https://www.avontyres.com/en-gb/tyres/speedmaster-mkiiAvon Safety Mileage MKII R 3.50 Yes
https://www.avontyres.com/en-gb/tyres/safety-mileage-a-mkiiAvon Roadrider MKII F or R 3.25 Yes
https://www.avontyres.com/en-gb/tyres/roadrider-mkiiDunlop K70 F or R 3.25 Yes
https://www.dunlopmotorcycletires.com/tire-line/k70/Dunlop K70 R 3.50 Yes
https://www.dunlopmotorcycletires.com/tire-line/k70/Duro HF-301 3.00 3.25 Yes
https://www.duro.com.tw/en/product/motorcycle/5efe9e1f026130337e48b827Duro HF-307 3.25 3.50 4.00 Yes
https://www.duro.com.tw/en/product/motorcycle/5efe9e1f026130337e48b83eDuro HF-308 F or R 3.25 3.50 4.00 Yes
https://www.duro.com.tw/en/product/motorcycle/5efe9e1e026130337e48b80cDuro HF-317 F or R 3.25 3.50 Yes
https://www.duro.com.tw/en/product/motorcycle/5efe9e1e026130337e48b81fDuro HF-314 F or R 3.25 Yes
https://www.duro.com.tw/en/product/motorcycle/5efe9e1e026130337e48b822Heidenau K34 F or R 3.00 3.25 3.50 4.00 Yes
https://www.heidenautires.com/product/k-34/Heidenau K67 3.25 3.50 4.00 No
https://www.heidenautires.com/product/k-67/IRC GS-11 AW F 3.25 3.50 Yes
http://www.irc-tire.com/en/mc/products/commuter/gs-11/Metzler Block C F or R 3.00 3.25 3.50 Yes
https://www.metzeler.com/en-us/products/tires/block-cMetzler ME77 F 3.50 No
https://www.metzeler.com/en-us/products/tires/perfect-me-77-cruisingMetzler ME11 "Perfect" F 3.25
Shinko SR241 F or R 3.50 Yes
https://shinkotireusa.com/product/trail-pro-sr241-series-tire/211922Shinko Classic 270 F 4.00 Yes
https://shinkotireusa.com/product/super-classic-270-tire/211905I'm sure I missed some makes and models of 100% profile, 19" rim tires, between 3.00 and 4.00-19 sizes. If you have additional candidates to suggest, please do.
If you can afford to purchase tires from Coker, they offer some tires that qualify that will not be found on my list:
https://www.cokertire.com/tires/styles/motorcycle-bike.html?tire_rim_diameter=2902A note about Duro. Duro is a tire manufacturer with a factory in Thailand and offers a wide variety of tires for Scooters, Mopeds and smaller motorcycles such as are used in Asia. They offer an amazing range of small and narrow tires, including tires that should fit classic bikes of years past. If looking for moped or scooter tires, give their product list a look. They had very many 18" 100% profile tires that are not included in my list.