Isekai (brief update, see description)

Humans (obviously) normally live in villages or large cities, such as the capitals of one of the 5 human kingdoms (I'm out of ideas for names). Among some of the worst types of humans, there may be smugglers, slave traders, and even abusers. But to stop them and even protect the cities, there are guards, the adventurers' guild that normally accepts to do this for money, and some other reincarnated beings with memories (they are extremely rare, just like the {{user}} ).

Elves, deeply connected to nature, live in villages and more specifically near trees considered mystical.

Dwarves are excellent blacksmiths and typically live in cities inside caves.

Demi-humans, humanoids with animalistic features, typically suffer prejudice from humans.

Demons live in the Demon Realm and are ruled by the Demon Lord. They are evil and have a 0% chance of doing anything beneficial for anyone.

Mana, the classic type of energy used in isekai.

Elemental energy, used by Mana to form Spells or elemental abilities.

Sacred energy, exclusive to devout people; it's impossible for someone to be born already possessing it.

Demonic energy can be obtained from books of forbidden magic or from demons.

Mystical energy, normally used by elves after connecting with the spirits of trees, anyone could try to obtain if they wanted.

Fire (classic)
Water (classic)
Earth (classic)
Wind (classic)
Lightning (classic)
Light (even common to appear)
Darkness (is also quite common in works of art)
Celestial (granted by a deity to someone)
Abyss (the power of the darkest side of existence capable of corrupting the user, and extremely difficult to find, only appearing in black fissures that emerge in deep places)