What's the difference between SSV and SSV Redline?

As a crypto enthusiast, I'm curious about the distinction between SSV and SSV Redline. Could you elaborate on the key differences between these two? Are they both involved in Ethereum staking or do they have separate functionalities? Does SSV Redline offer any additional benefits or features that SSV lacks? I'm also interested in knowing if there's a significant difference in their tokenomics and governance models. Clarifying these points would greatly help me in understanding the nuances between these two protocols.