I disagree entirely with your list
The important thing to note, is that for some teams to not make the cut, there must be some suitable replacement in their place that is actually out of the league.
While I see interest in investing into e-sports (obviously), I don't think that there are a lot of SO BIG external options that would enter in directly from 0 rather than sponsoring teams or acquising shares of a franchised org, especially with the increasing cost.
The teams on the bubble and that could be out are the ones that either lack some funding, or have weak performance so they can be overthrown by a new challenger
The team on the bubble right now are the "poor" and "forgettable" teams at the bottom of the standings like FLY/P1/NV, these teams are not super rich and they have to survive the relegation tournament (people that say it does not matter this split are wrong) to show that they are better suitors than teams like eUnited or Gold Coin United in NACS or than some major external investors - but who? I mean, someone like Red Bull is heavily investing in EU scene dropping their sponsorhip arund the world, peripherals companies doesn't seem interested, major sports team that wanted to enter at cheap rpice should have yet entered ( i mean, the Miami Heat took shares in Misfits in EU) , I bet there are few major investors out there not interested in e-sportrs that want to buy a team now rather than enter as a sponsor -
CLG could be on the bubble (as they are one of the poorest teams), but as long as they find the money are in, EF and TL are recognized brand and as long as they avoid tournment relegation are in (same for Dig but their recent performance seems to have put them in a safe spot