Types of fire techniques
Melee - Melee Fire release techniques are such that cover around the user's body or certain limbs (more commonly). They do not add any physical damage to your strike but leave a a nasty burn effect, which could lead in your opponent unable to perform simple movements at times due to the pain. These types of methods are rare within the canon field but are large created as custom jutsu & at this point may seem pointless to create as most uses have been created multiple times, so try think outside the box if you ever intend to create one. Some examples of canon release would be Flame Rasengan. similar to a normal with the exception of creating a blaze of fire which envelopes the target as they are pushed back. Kenjutsu is another style that you are able to combine with fire release. By releasing your chakra into a handed weapon you are able to create either a thin veil of flames to wrap around the blade or heat the blade itself up to a certain degree. This greatly increases the cutting potential of your blade, allowing it to slice through denser objects even more finely & also at times leaving the object with scorched or melted around the edges.
Streams/Widespread - Very effective methods of fire release. Streams are purely condensed flames that have a low area of cover but carry a powerful punch behind it. The stream itself moves at a fast pace & with some jutsu, due to its confined form, is able to strike the opponent just as a solid object would. A majority of streams are mainly veils of flames that, on contact, burn past your opponent having them caught in the middle. This is great to trap & "finish off" your opponents at times & is a commonly used method when having the opponent trapped.
Widespread Fire jutsu are usually of a higher rank due to the amount of chakra placed within the jutsu & the amount of concentration & focus required to perform such jutsu. Such jutsu include "Great Fire Majestic Annihilation", performed by the infamous Madara Uchiha. This is a prime example of a widespread technique & is considered one of the most dangerous jutsu because of its coverage & sheer power. These types of jutsu require the user to knead a large amount of fire chakra while taking in a deep breathe, they then continue to expel & release a stream of flames that widens the further it reaches. Due to continuously having to provided their built up chakra while expelling the flame, the user is left vulnerable to other attacks if not noticed. If the user would notice an attack they would have to stop the fire stream in its tracks & defend themselves.
Projectiles - Fire projectiles are the most commonly used field of fire jutsu & cover a large amount of the list. They can range from short to long & vary in numbers & size. These jutsu are most preferred as they require only a fixed amount of chakra & can then be released without the need to constantly feed the projectile. Fire itself is a fast traveling element but does not compare to Lightning release & is slightly slower to Wind release. They can be release from the user's mouth by taking in a breathe while gathering you fire chakra at the base of the lungs & then exhale, releasing a sphere of fire that travels forward. They can also be release by gather fire chakra around the user's hand & focusing on condensing it into a sphere of flames & then hurl it toward the opponent. Depending on the force used in the throw the distance can vary, this does not effect Range given in description, but does at times effect the description you had written down, an example would be describing the throw as just swinging your arm, releasing the ball of fire. This does not really explain much & could confuse your opponent to the amount of force you added. How you could say it is "As I create the sphere of fire, I bring my right arm back & then swing it across while releasing the ball".
An important note that does not just involve fire release but any similar jutsu of any Element. If a jutsu allows the user to fire off multiple projectiles, this does not mean that all multiples of the technique equal to the same rank individually . Each projectile is divided up & given less amount of chakra the more projectiles you create.
( Bakuhatsu Enhogan ) – Exploding Flame Shots
Rank: B
Type: Attack
Range: Mid
Chakra Cost: 20
Damage points: 40
Description: The user shoots multiple fire shots from their hands that are able to cause fiery explosions on impact with any object. The shots can't set the opponent on fire, though they can cause damage by exploding on him.
As the jutsu says, the user is able to fire off multiple fire shots. This could be from a range of 2-10 but with each number added, the less damage each projectile does on its own. When combined to strike together that is the only time it will be considered a B Rank. If you create a single fire shot it does consist of enough chakra to act as a B Rank.
One thing one needs to take into consideration is the following:
S-Rank = 2 A-Rank Projectiles = 4 B-Rank Projectiles = 8 C-Rank Projectiles = 16 D-Rank Projectiles
Each rank is double the power of the preceding rank, so dividing the number of projectiles makes them follow the same principle.
Alternative releases- This method encompasses techniques that fall within the category of Katon, yet do not actually produce Fire but rather a substance that possesses properties that can aid fire. In short, it's Fire release that doesn't possess fire. The substances that are created using techniques within this method are generally flammable mists or thick clouds of ash that is highly combustible. However there can be techniques that do utilize fire with another medium to create an even greater source of fire, i.e lava, which allows for the technique to be considered an alternative method of release. As far as chakra goes for build up of techniques within this method, one would gather their chakra as they normally would for katon, however before release they would only superheat it enough to keep it in a level of purgatory between becoming actual fire or not and temper the technique to come out the way they want it (mist or thick clouds of ash) and then, based on how the technique is (if it's wide spread like a stream) they would release the chakra manifested into that entity. As for the alternative techniques possessing fire, one would simply release fire the way they would, combining it with the second medium to create the stronger element to get the results. For example, to create lava, one use Fire+Earth. Create the fire with Katon, mix it with earth and the results will be a Katon technique that equals Lava.