The vast majority of the extensions appear to be in the
LONGER NESTED format.
For the record.
Have to check the changelogs to see that the next version will support both formats.
I kind of recall that it didn't, Might be an awful lot of retro-fitting to be done if that is the case.. They are both supported : )
Also only the NESTED format style is the only type that creates the collapsible menus. The other type does not create the ▶
EDIT: which makes perfect sense all outline below... Duh
TBC