Such as? Giz a clue
I just checked the Page of Germany and the following companies are missing
Avanti Air flying with ATR 72 (i.e wetlease for Intersky Austria )
Lufthansa Traditionsflug JU 52
Hanseflug GmbH flying twice a day with AN 2 between Sylt and Wyck
and this is only the German page
the ATR is shown under Intersky, the other two are not there as piston (as per the notes).
Isle of Man is missing completely
Avanti Air has also still some ATR 42 (see fact sheet on their homepage) and are mentioned nowhere
The 3 Avanti Air ATR42 were sold to Canada last year, check out the fleet link and they are not there. Old data still on the web page.....
The Isle of Man operators are shown under the UK as its a UK address, any biz jets shown with their operators who could be anywhere in the world!