I will be describing this for select few characters:

Kea
Mazatl
Nita
Xoc

Kea

Weapon: Taiaha

An old Māori weapon resembling a stick with one end flattened and the other sharpened (usually has sharpened stone on this end).

Fighting Style: while he can hit pretty hard (enough to dislocate a jaw with a single punch on occasion) he prefers to stay at a distance. He uses magic and projectile weapons to strike from afar and leave his enemies stunned and/or wounded. With his main focus always having revolved around learning as much magic and curses and the like as he possible could it left little time for him to develop his fighting skills more. Though make no mistake he is no pushover. A physical fight with him could be just as deadly.

Particular favorite curses of his include:
• a plague of darkness- near instant blindness that cannot be cured unless a certain remedy is consumed (though good luck getting that from him).
• a plague of poison- not so often used unless you are a bitter enemy of his, this makes your blood turn poisonous to your body. (The only cure is to be bitten by a snake of equal venom strength as the poison, which reverses the curse and returns the blood to normal).
• "with blood spilt over stone, and your deeds to me known, I command the breaking of bone!" - with this chant completed whomever he aims it at will suddenly have all or nearly all of their bones immediately broken. (A prevention is to not let him speak or finish the chant. A cure is to either use healing magic or soak in a bath containing native Māori soil).

He is also very efficient in shadow manipulation. Using it mainly in the form of crows to distract, seek information, or protect. However, this magic is extremely weak against light magic (if there is enough to get rid of the shadows) and can physically harm him if done right.

(He never kills an enemy. May leave them unconscious or severely injured, but never kill. And mind you none of his preferred curses kill either. They only give everlasting suffering. It is so rare for him to actually cause the death of another that he's only ever done it twice in his life.)

Mazatl

Weapon: throwing spear, personalized metal claws

These claws are made of strong metal and look similar to a thin glove on his hand. At the end of each finger is a two inch long metal claw that resembles those of a jaguar or puma.

Fighting Style: he prefers to wait for his enemy to attack the retaliate quickly and ready himself once more. This method was developed later in his life, however, and originally he would strike first, hard, and fast. Those claws aren't just for show, the tips are usually dipped in either snake venom, spider venom, or a poison. But he has another set of claws without, for sparing rather than actually fighting. These claws are shorter and a bit more dull (less sharp).

His method is to get an opponent down then slash them before they can retaliate. If he is using his normal claws then after this move he merely bides his time and waits for the venom or poison to take effect. If  not then he keeps up his in and out jabbing and slashing until the opponent wears out, then he finishes it off with a harsh kick to the head.

Though his style is often changing as he loves to spar and will adapt his style to match the situation he is in.

Nita

Weapon: double tomahawks, limited magic

He is near always making new tomahawks but one favorite in particular is traditionally made but with metal placed over stone to give it a more sharpened edge.

Fighting Style: he is both a mid range and close combat fighter. Often throwing one tomahawk and getting in close with the other. Though he will also fight with two simultaneously. He prefers to get close to an opponent and hit or slash in rapid succession forcing his enemy on the defensive and leaving little room to fight back.

He can't control his explosions very well but one tactic he will use (depending on the enemy) is to charge up an item or even his own tomahawk (the reason he is always making more) and throw it. Upon impact or after a few seconds it will explode. The larger the time he charges, or the more time he takes to change an item, the larger the explosion. Though this is used rarely.

Another weapon of his is his natural affiliation for geokinesis. Again he isn't able to control it well (though better than his explosions) but that won't stop or hinder him in the slightest. He will create walls of rock (for defense), various projectiles, or even fissures to use against an opponent.

(Both of these magic techniques require a lot of energy, however. And will fatigue him quickly. The more and longer he uses it the more likely he is to pass out from exhaustion. Though this has never made him pause to do so).

Xoc

Weapon: fists, various knives, claws and fangs

Her two best knives are her ever-present stone knife and an enchanted bone knife. Her other weapon selection is merely to shift into a jaguar and use natural weapons.

Fighting Style: she loves to get in close and blindside an opponent before giving a quick succession of hits to knock them down before they can retaliate. Though she has adapted a slightly different style to fighting with other nations. As they can be just as quick as her and even harder to hit.
This other style is very similar to the first one but with major differences: she uses her full strength (which is capable of knocking down a small building if she so desired) and is more prone to catching and throwing her opponent to stun them.

She is always on the move and, now due to her new blind spot, never lets an enemy get out of range from her sight.
On occasion, to surprise an opponent, she will shift into the from of a jaguar and attack. She is even faster in this from and more deadly. Though this tactic is only used against select opponents or in dire situations.