For 4x2, go for Michelin LTX 235 75 R15. I believe these are the tires (at that time) used by the Ford Ranger. Kunat ng gomang eto and value for money talaga.
The Crosswind uses these too only that flat rate is slightly smaller (235 70 R15)
As for the 4x4 Sport, stock tires are General 245 75 R16 when launched. You could either look for Michelin LTX too (if they have this size) or Yokohama Geolander/Bridgestone Dueler.