This is not a complete list (maybe). It's just a list of plant drinks fortified with iodine that I've come across.
As of 22 July 2023, these were the iodine amounts (micrograms [µg] of iodine per 100 ml plant drink):
Tesco Unsweetened Soya Milk Alternative 1L
&Tesco Oat Drink 1L
- 22.4 µg/100 ml (United Kingdom)
Alpro Junior Growing Up Soya Drink 1Ltr
- 24.5 µg/100 ml (United Kingdom)
- 24 µg/100 ml (Germany)
Alpro Original Longlife Soya Drink Alternative 1L
- 22.4 µg/100 ml (United Kingdom)
Alpro Growing Up Oat Drink 1 Litre
- 11.3 µg/100 ml (Germany & United Kingdom)
The Original Oatly Whole Oat Drink 1L
&Oatly The Original Barista Edition Oat Drink 1 Litre
- 22,5 μg/100 ml (Germany & United Kingdom)
Mighty Barista M.Lk Uht Drink 1 Litre
- 15 µg/100 ml (United Kingdom)