Interestingly enough, Mobius and the Time Variance Authority would know that Coulson was revived during the events of Agents of SHIELD, but it’s heavily implied in the series that Coulson remains dead.
As the Loki premiere explains in-depth, the multiverse is a very real thing in the MCU, and it’s the sole reason the TVA is even in existence.
During WandaVision, there seemed to be another connection to SHIELD, though Jac Schaeffer opted to avoid a question about the nod entirely.