As for Archon names I have a short list that I would be willing to share with you and in brackets shall be the pronunciation:
Kedram'attayr Kyjéell. (Ked-ram'-at-I-ear Kai-je-L)
Uillias Kagayn'xel. (Will-ias Kag-I-in-zel)
Xelthurn Kaylkaan. (Zel-thurn Kai-ul-kaan)
Syrenthi Allataan. (Sai-ren-thi Al-a-tan)
Geltaugh'gramaan. (Gel-taur'-gra-maan)
Zhelgritt Kjillinaad. (Zh-el-grit Kzh-ill-in-aad)
Foruntad Daryth'endorirmyrkla. (For-un-tad Dar-ith'-en-dor-ir-myr-kla)
Eyrithkaar Enystram'ouus'Teldarithnarl Kelsaa. (I-rith-car En-ice-stram-oose'Tel-darit-narl Kel-saa)
Tyrith Xel’hannar. (Ti-rith Zel'han-nar)
I apologise for the length of some of the names. These are a few examples I have and are names that I am happy with other peopl using. I do have a much longer list but they must be kept a secret.
The Kabal of the dying scream could have, famously, extinguished a star somehow. The death song of the sphere was delectable and the combined screams of terror and pain of numerous Imperial Worlds took the Archon to another plain of ecstasy.
I could work on it much more, but it's not my Kabal.
If you'd like any other help, just ask.
Oh, and I can come up with more normal names if requested XD