Which unused Pokémon type combinations will be used during (or before) Generation 10?

Prediction market on manifold. For the purposes of this question, swapping the 2 types of the combination (e.g. "Poison/Ice" or "Ice/Poison") would both count as the same type combination. Also, I added Dragon/Fairy to the options, as (while it's not technically an UN-used type combination) it's currently inaccessible due to being exclusive to one singular Mega Evolution.

24h Volume: $88.956. Liquidity: $1,000. Resolves: 6/1/2026.