It would make more sense if Sowars were horse cavalry and Caravansarais were just called Stables (Caravansarias could be a Tavern equivalent instead). They could even keep the old camel unit as a Rajput camelry mercenary.
It would be more accurate to call the current “Rajput” unit a Pata or Pata Swordsman so a new Rajput mercenary would not conflict. The current “Rajput” unit is also pretty inaccurate. The patas they are armed with are more of a Maratha weapon but the Indians are mainly based on the Mughals who would have had Shamsherbaz as their swordmen.