1)Billy Batson was given a scroll of prophecy that speaks of the great 7....empowered by Shazam and directed by the scroll....BB in his new transformed state goes and rounds up who he believes to be the prophesied about group. Using the wisdom of Solomon to decipher the traits of the individuals.
2) The rock of eternity is HQ
3) As time goes forward individuals that more holistically fit the scroll's description replace Shazam's initial picks. First example: Tyroc replaces Black Canary in the JL's Fourth Month
Noh Varr needs to be picked back up by Grant Morrison. In Morrison's hands Noh Varr is one of the best 'new' characters Marvel has produced....out of Morrison's hands Noh Varr is a blander shallower non-descript stat quo character.
But when he was first introduced, he shot to the top of my favorite character list.
The short answer is Yes: power distribution and characterization is both stereotypically sexist and racist.
The reason, which is not a justification, is because the almost all characters are created by sexist racists, or at least minimaly educated, ignorant creators, that are writing to appeal to an audience with the same predilection. The Caucasian male. Though sophisticated stories exist and clever characterization can emerge, it is not a common occurrence. The strengths of the comics usually range in the areas the target audience is more versed or deem important.
Accurate cultrally diverse characters are a rare phenomenon.......but if you ask the majority of the 'target audience', things are a little too ethnic...at least that is the consensus I have compiled after decades of near ceaseless research....I will say the original Milestone universe 'Dakotaverse' was a breath of fresh air on this specific subject.
There are more obscure titles that are approached with cultural savvy.....and the remaain obscure, i'm deducing, because that doesn't appeal to the target audience. The same target audience who probably make up the bulk of this community comicvine...
so don't expect too much comraderie on these issues.