Welcome, @Camio! Great that you are here.
I am also a big functional proogramming fan and, amongst other places active on the Elixir forum. My own intro to the DLTworld was in 2012 when I first learned about Bitcoin. After a couple of small Bitcoin-elated jobs I made the front-end of the SatoshiCarnival provably fair bitcoin casino. After a couple of years I ended up working at/co-founded a company where we are actively working with fault-tolerant and decentralized software called resilia.nl
Right now I am working with Etereum on a day-by-day basis, but also very interested in all the other tech out there.
Let me actually open an introductions-topic; seems like a good idea.
Bitcoin is obviously the ‘first generation’. Probably, simple forks that keep most of its functionality unchanged like Litecoin and possibly Namecoin can be called the same.
I think most other, newer tech that is built from the ground up and/or has significant functional changes, is ‘second generation’. ‘third generation’ is mostly a term that is used to differentiiate your product from all other second generation products, and it is arguable if they are actually different enough to be considered a new generation objectively, in my opinion.