Earendel star's official name includes the abbreviations WHL and LS, as do some other very far-off objects....
What do they stand for?
WHL is an initialism of "Wen Han Liu", the names of three astronomers and the authors of a catalog A Catalog of 132,684 Clusters of Galaxies Identified from Sloan Digital Sky Survey III
[if anyone can find Liu's full details please feel free to edit them in)
I can't find a definitive source for the meaning of "LS", but I speculate that it means "lensed star" or "Lensed source".