Oh!!! Sorry 🙂
So...basically it's none of them.
All of these are hosted tiers. The self-hosted is our Open Source which you can find https://github.com/allegroai/clearml-server
It has an explanation on how to install it and some of the options available for you.

Looking at our pricing page, I can see how it's not trivial to get from there to the github page...I'll try to improve that! 😄