I had a J-top Pajero (gas) before and used it going to the flood prone school in Manila.
You can look for older model Pajeros, Fieldmaster variant if kaya or old nissan patrols, or 1st gen Toyota Gas Fortuner.
Alternatively a second hand Older model Suzuki Jimny has proven its worth according to a relative. its good for floods but sirain daw suspension.

another car that i have tested sa flood is the old Mitsubishi Strada Pick-up.