I dunno bout 10v10 but i ´ll suggest some great scandi unit:
I actually think scandi is an amazing coalition but you will hear mainly other opinions bout it.
Inf: Boths Rbs(atgm/ manpad) teams are very unique and useful Northandjegere and falskremjegere 90 Fsk (Not FKP!!) and or Kustjegere 90 are great too. Dont miss out the strf4090 or the norgwegian counterpart as apcs.
Tanks: strv55, packs a good punch. Strv 103d, for defensive purposes, strv121- i would sugggest to operate them in double/tripple packs, because 19 front armor isnt as durable vs superheavies.
Support: Love the Otomagic, like everyone. Eots hawk, imo amazing if you buy 2 of them, they are relyable. Bkan Ofc, dont forget 2 Fobs. Amos is controversial. If you have 2 fobs, might aswell use amos because its awesome as a firesupport mortar in inf vs inf fights. I actually like the 50 point spaag too. Its a usefull firesupport unit.
Recon: Panserbil!! It gets underestimated since it got nerfed hard, but iamazing for only 15 points. Scout defender as a cheap recon heli, 10 point m41 recon tanks can be recommended.
Jets: Well try to use all 3 viggens /cluster, atgm, asf) for shitsn jiggles to confuse your opponents.
Jokes aside i like the norwegian f16 asf, the norwegian sead, norwegian f16 bomber and usually the f16Mlu