Hello fellow european bassist

all of the following should fit a 36.25" scale E string:
- Rotosound RS88EL - 115/100/75/65 -
38" / 96.5cm from the ball end to the start of the silk winding
- D'addario EXL170SL - 100/80/65/45 -
38" / 96.5cm from the ball end to the start of the silk winding
- Dunlop Extra Long - 105/85/65/45 -
39" / 99cm from the ball end to the start of the taper
like all of the D'addario with "SL" at the end of the code and all of the Rotosound with "EL" at the end of the code, Ernie Ball Super Long have been created for 35" scale, I'm not sure they will fit, but, IMHO, you should try with Dingwall strings first (I used to play a 6 strings ABZ tuned ADGCFBb and tension was very good) because they are crafted to fit the fanned fret instrument, I mean all of the other sets which you can find have been engineered to fit a standard scale/parallel fret bass which means they are not optimized for fanned fret instruments and you will notice tension isn't even anymore (this way you waste one of fanned frets advantages), if you are not happy with Dingwall strings you can always place a custom order For Kalium strings matching the tension required by Dingwall for each string:
https://dingwallguitars.com/media/attachments/2019/04/22/kalium-string-chart.pdf