You can buy hashrate on NiceHash. NiceHash is not a cloud mining company since you are not buying contracts but are only creating hashrate orders which can be manipulated (change the price, hashrate limit, or cancel it anytime).
You can read what NiceHash is here: https://www.nicehash.com/support/general-help/nicehash-service/what-is-nicehash-and-how-it-works
Nicehash is the gateway to rentals, but the deposits and fee's make renting from these guys unideal as well as a questionable history of fraud hence no one's mentioned em thus far. You can read what NiceHash is here: https://www.nicehash.com/support/general-help/nicehash-service/what-is-nicehash-and-how-it-works
maybe check this alternative out (my reference included) MiningRigRentals.com