What I'm confident on:
Dimitri: ^^ Swords, Lances, Authority, Riding ---- vv Bows, Faith ---- HT ???
Dedue: ^^ Lances, Axes, Brawling, Armour ---- vv Faith, Riding, Flying ---- HT None
Felix: ^^ Swords, Bows, Brawling ---- vv Reason, Authority ---- HT Reason
Ashe: ^^ Axes, Bows ---- vv Reason ---- HT Lances
Mercedes: ^^ Reason, Faith ---- vv Swords, Spears, Axes ---- HT Bows
Annette: ^^ Axes, Reason, Authority ---- vv ??? ---- HT ???
Sylvain: ^^ Lances, Axes, Riding ---- vv Bows ---- HT ???
Ingrid: ^^ Swords, Lances, Riding, Flying ---- vv ??? ---- HT ???
Dimitri's only unknowns are Armour and Flying. Both Edelgard and Claude have Hidden Talents and we don't know if Dimitri has one yet. I could see Armour for him.
Dedue is fully known.
Felix is fully known, unless he has a second Hidden Talent in Riding or Flying but I doubt that's possible.
Ashe's only questions are his Movement Skills, but we know he starts with E's in them so no Strengths at least.
Mercedes might have a a Strength or Weakness in the Movement Skills that we haven't seen.
Annette is the big question mark. She's definitely strong in Axes, Reason, Authority but we have no idea on anything else.
Sylvain is known, except for any Hidden Talent.
Ingrid has four Strengths known, but could have more. (Though so far we haven't seen anyone with more than four.) She seems to be Neutral in Brawling and Faith (from Seminar calculations), leaving Axes, Bows, Reason and Armour unknown. It's also unknown if she has a Hidden Talent.
Edit: So like this: