If your Dorico engraving needs to match Finale exactly, you are going to have to get the exact line thickness and other Finale settings the other engravers are using and change those in Dorico. And what fonts are they using? There are many music and text fonts. If they are simply using Finale defaults, it would be Maestro or Maestro Wide music font and Times New Roman. You would have to find SmuFL music characters that come close to those in Maestro.
If only similarly is desired, then the text fonts, inherent slur shape, and staff, beam and stem thickness might be the things to make match.
The following thread has a recommendation by FredGUnn for changing the slur shape in Dorico that, to me, looks very much like Finale.
All in all, it might be easier just to do it in Finale. But of course, you would still have to be sure your settings match those of the other engravers.