Wearing a glucose monitor for a while showed me that some veggies are worse than the usual suspects: 80g of rice with fish gave me a glucose spike higher than a Nutella sandwich. Other veggies, like beans, surprisingly low.
Try eating wholegrain rice.
Wholegrain won't do magic here. Glycemic index of wholegrain flours and wholegrain products (bread, cookies...), even sugar free, can be higher than foods made with regular grain. E.g. glycemic index of butter cookies is 60-70 (https://glycemic-index.net/cookies-pastries/ https://glycemic-index-database.com/foods/butter-cookies-flo...), for a wholegrain baguette is 75 (https://glycemic-index.net/baguette-whole-grain/).
It is common knowledge in the vegan world to pair lentils with rice, as they complement (rice is low lysine, high in methionine, lentils the other way). Lentils includes fiber that lowers the glycemic index of the overall meal, but also rice eases the otherwise heavy digestion of lentils. They both pair in other micronutrients (iron, zinc, selenium, magnesium, potassium).