What type of gloves should be used while diluting sulfuric and hydrochloric acids?
There are numerous sources online comparing polymer materials resistivity in hazardous environments, but most of them agree that in your case ordinary nitrile gloves would protect in case of incidental contact, and butyl rubber/neoprene/PVC gloves are more suitable if a prolonged exposure is expected.

Nitrile gloves are disposable and cheap, and always should be changed when contaminated with chemicals as they only offer basic protection.