A practitioner asks: “Are the Archangels the highest form of angels that can be requested for help on behalf of humans or are the Seraphim and Cherubim real and able to be called upon as well?”

These are the levels of angels you need to concern yourselves with. There are special beings of a higher order among the angelic realm that have special assignments due to their particular talents and configuration, but this is not something we wish to describe at this point in time. The same is true in the description we have given you of the high-level helpers, being a kind of special angelic team that has particular authority and power entrusted to them for high-level assignments. So you are on safe ground, turning to the angels and archangels in all your work, and you will be effective. Like everything else you do in requesting divine help, we can extend the energies when you lack some specifics and still get the job done.