Regarding Order of Ecclesia, it’s even less connected than Portraits of Ruins, which at least has a central hub. Only the very last part opens up a bit but it’s not a big area. The rest is almost completely linear and made of separate, small levels, featuring a bit of backtracking for specific quests. Calling it a metroidvania is almost a stretch at this point.

It is pretty good though and I liked it a lot though. It almost feels like the missing link between classicvanias and metroidvanias, especially in hard mode.