I tried searching, but couldn't find anything. The current landscape of browsers is pretty unhealthy, imo, with only two options (arguably close to only one, and practically only one within the GOS paradigm). The reasons why this is unhealthy should be manifest: Chromium could lose the Google development muscle if they are forced to divest it, making the premise of fast/timely updates and further development as part of security uncertain; and Firefox seems to have dug itself into some sort of situation where it's either hard for them to implement security, or at the very least it's hard to prioritize it. Thus (and just in general), the prospect of a completely new browser engine is exciting.
Now, of course, ladybird is quite far off, and further away on Android, but has the GOS team considered contributing or advising (or in any other way approached) the Ladybird development? They originally did the work in c++, but are switching to Swift, so there seems to be some emphasis put on security, and since the project is in its early stages, there might be more room to have an impact on development to make it a more secure browser, which will create some needed competition and possibility of choice for GOS users.