I have a Male Earth bender Avatar OC, JSYK

 B O Y S 

Adam - means 'man' or from the Hebrew noun ha adamah meaning "the ground" or "earth"

Ajax - From the Greek name (Aias), perhaps deriving from Greek (aiastes) "mourner" or (aia) "earth, land"

Alan - means either "little rock" or "handsome"

Beaumont - From a French surname meaning "beautiful mountain"

Brent - From an English surname, originally taken from various place names, perhaps derived from a Celtic word meaning "hill"

Brody - From a surname which was originally derived from a place in Moray, Scotland. It probably means "ditch, mire" in Gaelic

Bryn - Means "hill, mound" in Welsh

Brynmor - From a Welsh place name meaning "great hill"

Clayton - From a surname which was originally derived from various English place names, all meaning "clay settlement" in Old English

Craig - From a Scottish surname which was derived from Gaelic creag meaning "crag" or "rocks", originally indicating a person who lived near a crag

Daichi (Eyyyyyy~) - From Japanese 大 (dai) meaning "big, great" combined with 地 (chi) meaning "earth, land" or 智 (chi) meaning "wisdom, intellect"

Dale - From an English surname which originally belonged to a person who lived near a dale or valley

Drummond - From a Scottish surname which was derived from various place names, themselves derived from Gaelic druim meaning "ridge"

Ebenezer - Means "stone of help" in Hebrew

Enki - From Sumerian 𒂗 (en) meaning "lord" and 𒆠 (ki) meaning "earth, ground" (though maybe originally from 𒆳 (kur) meaning "underworld, mountain")

Erdmann - meaning "earth man" from German Erde "earth"

Garland - From a surname meaning "triangle land" from Old English gara and land

George - From the Greek name (Georgios) which was derived from the Greek word (georgos) meaning "farmer, earthworker", itself derived from the elements (ge) "earth" and (ergan) "work"

Goran - Means "mountain man", derived from South Slavic gora meaning "mountain"

Hallam - From a surname which was derived from a place name meaning either "at the rocks" or "at the nook" in Old English.

Halle - From the Old Norse name Halli, a diminutive of names containing the element meaning "rock"

Halstein - From the Old Norse name Hallsteinn, derived from the elements "rock" and "stone"

Harlow - From a surname which was from a place name which was derived from Old English hær "rock" or here "army", combined with hlaw "hill"

Hermes - from Greek (herma) meaning "cairn, pile of stones, boundary marker"

G I R L S 

Almas - Means "diamond" in Arabic

Avani - Means "earth" in Sanskrit

Beryl - the English word for the clear or pale green precious stone

Bhumi - Means "earth, soil" in Sanskrit.

Chantal - From a French surname which was derived from a place name meaning "stony

Cybele - Meaning unknown, possibly from Phrygian roots meaning either "stone" or "hair". This was the name of the Phrygian mother goddess associated with fertility and nature. She was later worshipped by the Greeks and Romans

Cynthia - a Latinized form of Greek (Kynthia) which means "woman from Kynthos"

Demeter - means "earth mother", derived from Greek () meaning "earth" and () meaning "mother". In Greek mythology, Demeter was the goddess of agriculture

Eun-Ji - Sino-Korean 恩 () meaning "kindness, mercy, charity" combined with 智 () meaning "wisdom, intellect" or 地 () meaning "earth, soil, ground"

Ila - Means "earth" or "speech" in Sanskrit

Jael - the Hebrew name (Ya'el) meaning "ibex, mountain goat"

Lan - Chinese 兰 meaning "orchid, elegant" (which is usually only feminine) or 岚  meaning "mountain mist"

Lorele/y/i - From German Loreley, the name of a rock headland on the Rhine River. It is of uncertain meaning, though the second element is probably old German ley meaning "rock" 

Rochelle - From the name of the French city La Rochelle, meaning "little rock"

There isn't much because there aren't a lot of names that mean or are inspired by Earth