Question: differnces between the 3 survival modes?

I have a question regarding the current survival game options in Space Engineers 2. The "Standard" option is the initial game scenario featuring a tutorial and a storyline; I’ve played through this multiple times and have no further questions about it. There appear to be two other options now. The first is a scenario similar to the original Space Engineers 1; regarding this, I have a question: My understanding is that you build a spaceship to reach the space station, and—even without completing the quests—you immediately unlock fast-travel options to other sectors, as well as (reportedly) access to all blocks right from the start. Is that correct? My next question concerns the new "Quick Start" option for survival mode. What makes this one unique? As far as I can tell, it simply skips the tutorial while everything else remains identical to the first option—is that right? Meaning you have to complete all the quests, and fast-travel options aren't unlocked? I haven't been able to find any definitive information online about these three options. Perhaps someone could briefly explain the key differences.