No there is no higher or lower cast. All casts are equal and there is no hierarchy between them.
There are some profession-specific casts and because of low-income of a profession, some assume cast to be rich or powerful, and thus indirectly better or worse, like Taili, Lohar, Tarkhan. Interpretation of a cast based on their financial power is a product of an uneducated mind.
Rajputs, Jaat, Mughals used to be states and Nations in the past. Some times they carry fragments of their ancestry and cultural arrogance in them which makes them think they are better - but again its a product of primitives, immature mind. As Allah has made and described them, all casts and professions are equal.