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