It really depends on hat cloud names you have, there are plenty of cloud names being posted on this forum and the other popular domain forums and 90% of them are not worth anything. I have been investing in cloud names since 2007 and have sold quite a few over the years, but they are all either brandable names or names with keywords directly related to cloud computing. Words like the below are decent keywords but you have to buy therm on the aftermarket and these were registered a long time ago.
Computing
Security
Storage
Host
Hosting
Service
Services
Source
App
Software
and then short names that go well with the word cloud (and other tech niches) like Hub, Soft, Center, World, Vault, Store, Live, Link, Data etc etc
Don't fall into the trap of scraping the barrel for keywords that are still available because they wont be worth anything and you wont be able to sell them
Rather email existing owners and try and find a decent name and rather spend low, mid or even high xxx for a decent name and then try and sell it.
Hope that helps
Good luck