There are inconsistencies about the name of the "Early Supporter" / "Early Adopter" badge. Both phrases are used across strings and other official media.
I gathered all strings and official sources I could find.
It seems like the "Early Supporter" term is consistent across marketing assets like articles/updates, images and videos.
Strings:
Early Supporter:
Early Adopter:
Other sources:
Early Supporter:
Early Adopter:
  • Badge icon alt text on the website on the profile
Early Supporter & Early Adopter: