Yes, 83232179708 is for tripod joints. However some OEM's offer more than one option among their models for inner grease :
BMW 83238862744 is Fuchs Renolit PU-LFT1 . It has a very unpleasant price(I mean even the small BMW pack).
https://www.fuchs.com/za/en/company...-car-constant-velocity-joint-cvj-side-shafts/
Shell Stamina 0233B (SAAB 87 92 624 in 310g. cartridge) is NLGI 1 ,GKN approved.
https://saabwisonline.com/9-3-9400/2000/0-general/chemicals/technical-data/87-92-624-special-grease
Unfortunately such greases are available in >20kg. packaging and the only option for the mortals is to get them in small OEM packs.
GKN XP595 (MS9U025) is offered here and there (350g. cartridge) .
Another example - VW G052133A3 is listed as CV inner grease here (scroll down to position 30) :
https://www.scuderiacarparts.com/part-finder/bentley/continental-flying-spur/oe/121/2096/36984
According to this gentleman it is a MoS2 grease.
Febi 03630 is black in color,NLGI class 1 .
https://cdn.partsfinder.bilsteingroup.com/pf-document/CLP03630_GB.PDF
https://partsfinder.bilsteingroup.com/en/article/febi/03630
Them VW and BMW greases in the little packages should be available (in stock...or they can order it for you) at every VW and BMW dealer(Greece or anywhere). Also small brick-and-mortar part stores usually stock some OEM products.
The German online store looks hit and miss :
https://ca.trustpilot.com/review/www.hubauer-shop.de
If I were to visit Greece I'd just check with a BMW or VW dealer's place.