Protoclusters are overdense regions of galaxies that are typically the progenitors of the massive clusters (above 10^14 Msol)
At high redshift, protoclusters are identified through different populations of star-forming galaxies such as Lyman-alpha emitters (LAEs), Submillimeter galaxies (SMGs) and Lyman-Break galaxies (LBGs).
In the last years, we have been producing mock catalogs with the IllustrisTNG, FLAMINGO and EAGLE simulations to compare with the ODIN collaboration data of LAEs.