That's not the biggest problem.

What you're looking for is fording height... brakes, shocks and transmissions are always vulnerable... it's SOP to check them after a flooding, whatever the vehicle.

The most important thing is that the electricals and the air intake are shielded and at a height that prevents flood damage.

For mid-sized SUVs, this will mean the Fortuner, Everest, etcetera... ladder-frame SUVs, being pickup based, are often built with a fair amount of flood-fording capabilities.

Most crossovers (CR-V, Escape, Santa Fe, etcetera) are not. They'll ford floods up to about six inches below the air intake, but that's about it. It's still dangerous to take them through floods, no matter how tall the actual vehicle is... especially since bow waves can send water into unshielded intakes (which happens all too often, to the chagrin of many a CR-V or Escape owner...).

The smallest flood-capable vehicle should be the Jimny (point of fact, the Jimny is one of the most off-road-capable vehicles on the market...)... but I don't know about the intake tract and how high or low it is.