Their spawn commands are:

gmsummon "shoulderdragon_character_bp_summer_c" 150

gmsummon "shoulderdragon_character_bp_autumn_c" 150

gmsummon "shoulderdragon_character_bp_winter_c" 150

gmsummon "shoulderdragon_character_bp_spring_c" 150

The 150 can be any number, this indicates the lvl before taming. The only difference between each command is literally just the name of the season. You're welcome. Idk why the youtubers don't put this stuff up first thing.

Spring Drakelings - Highlands

Summer- Canyons

Winter- snow highlands

Autumn- edges of snow

You can find these on Valguero. I just found mine in the snow ( winter ) I have not seen yet in other parts of the map.

Hey so here it says that it doesnt spawn in Extintion but i saw one on extintion so idk whats up with that.

Hope this helped anyone

CAN DEF DAMAGE THATCH. Half my base was just wiped out by a summerling 😕

I have had these spawn on Scorched Earth by the blue water section of the river. Not sure if it's a bug as of yet or it's a feature but I have had a summer drakeling spawn on Scorched.

Also spawns on scorched earth, found multiple summer ones along the central river not sure if the other three types spawn as i havent found anything but summers yet

Drakelings are biome specific, and will receive a power boost aslong as they're in their home home, I just got a winter variant from killer snow on rag

They aren’t aggressive towards you or medium sized creatures unless if they are attacked first. They will attack any small dinosaurs you have with you. It seems anything the size of a Parasaur or smaller they will attack.