Team Flakes? I haven’t seen that cereal in years.
Nabisco sold its cereal division to Kraft which in turn sold to RalCorp (Ralston-Purina) which sold to General Mills. Wouldn’t hurt to contact General Mills, or RalCorp, which still makes private label cereal.
It’s been many years since I’ve had a delicious bowl of crunchy Team Flakes (closest is Chex), but, my guess is rice is the main ingredient. The Team box states rice, corn, oats and wheat, but I don’t know in what order. I don’t remember a strong wheat taste coming through, but definitely rice. I haven’t found any cereal to be its equal.
Actually, closest to Team Flakes is Crispx, not Chex.