The tag alias #64745 omegalioness -> omega_lioness has been approved.

Reason: 2 tags for same artist:
omega_lioness, ten artworks
omegalioness , 3 artworks

omega_lioness has e621 artist-page https://e621.net/artists/7783 which includes:
"Domains
furaffinity.net: 8
deviantart.com: 4
URLs
http://www.furaffinity.net/user/omegalioness/
http://omegalioness.deviantart.com/ "

FA username displays as "Omega_Lioness".
Their FA userpage links to the omegalioness deviantart.

Name(s) on art:
1) recent art has signature of "Omega" plus stylized "VY" (the "VY" also looks like an abstract lioness-nose-area)
2) some older art has signature of "Omega Lioness".
3) found one with "Omega_Lioness_VY" on art (posted to their DA & FA in 2019), which is variation on their Twitter* username (username OmegaLionessVY).
4) found one with "OmegaVY" (see later in this forum post) which was posted (to their DA & FA) in 2016.
5) possibly other names on older art. Didn't check ALL older art, because less important than name on more recent art.

* = not calling Twitter "X". nope nope nope.

Three examples to show that same art posted to above FA and above DA:
1) "Warm winter"
DA: https://www.deviantart.com/omegalioness/art/Warm-winter-940522625 "Published: Dec 10, 2022"
FA: https://www.furaffinity.net/view/50164700/ "posted Dec 10, 2022"

2) (skipping back to 2021)
"Making fires"
DA: https://www.deviantart.com/omegalioness/art/Making-fires-893978213 "Published: Oct 5, 2021"
FA: https://www.furaffinity.net/view/44007525/ "posted Oct 4, 2021"

3) skipping to earliest anthro art i see in their FA gallery:
DA: "Christophe" https://www.deviantart.com/omegalioness/art/Christophe-54748285 "Published: May 6, 2007"
FA: "Ural Christophe Deck" https://www.furaffinity.net/view/1825404/ "posted Dec 24, 2008"

(I assume is fan-art of a havoc_inc. character)

***

Start with small tag: (edit: omegalioness with only 3 posts)

1) Waterfall morning
Source in Omega_Lioness FA main gallery (omegalioness username)
post #1769199
with "Omega_Lioness_VY" on art, posted to DA (& FA) in 2019.

2) Feeding time on Grand Canyon
Source in Omega_Lioness FA main gallery.
post #1769200
(name "OmegaVY" on art)

3) Wild princess
Source in Omega_Lioness FA main gallery.

*

Going through the posts tagged with omega_lioness:

1) "Furry"
post #160268
e6 Sources field links to omegalioness deviantart URL. (still in their DA gallery )

2) "Everything will be ok..."
post #237906
DA: https://www.deviantart.com/omegalioness/art/Everything-will-be-ok-314952087
FA: Omega_Lioness (omegalioness username) gallery: https://www.furaffinity.net/view/8424466

3) "The struggle against our vices"
post #349908
DA: https://www.deviantart.com/omegalioness/art/The-struggle-against-our-vices-382549760
FA: Omega_Lioness (omegalioness username) gallery: https://www.furaffinity.net/view/10990172/

(putting omega_lioness posts #4-10 in reply to avoid too much in this alias suggestion)

EDIT: The tag alias omegalioness -> omega_lioness (forum #381262) has been approved by @slyroon.

omegalioness e621 posts #4-10 :

edit: by the way:
"Submissions: 522" at their FA,
and "786" uploads in their DevArt ALL gallery ( https://www.deviantart.com/omegalioness/gallery/all ).
ie. much more of their artwork not at e621 yet.

The tag alias omegalioness -> omega_lioness (forum #381262) has been approved by @slyroon.