If the Children of Vividaren were in D&D 5e, then they would be able to grant their clerics the Knowledge, Life, Light, Nature, Tempest, Trickery, War, Death, Arcana, Forge, Grave, Order, Peace, and Twilight Domains.
Vividaren herself would be able to grant her clerics all of those as well as Solidarity, Strength, Zeal, Ambition (all from the Amonkhet setting, but player characters can use them in other campaign settings if the DM approves), Blood (which is unofficial homebrew by Matthew Mercer, a Wizards of the Coast affiliated DM), Mind (developed by Keith Baker, the writer of the Eberron campaign setting; it was released on the Dungeon Master’s Guild), Beauty (unofficial content developed by Wizards of the Coast designers and uploaded on Twitter), City (from Unearthed Arcana 7 - Modern Magic), Protection (from Unearthed Arcana 22 - Cleric) and Unity (from Unearthed Arcana 68 - Subclasses, Part 2). She is omnipotent and omniscient, but she is not omnipresent due to her physical presence.