If you think about it, Anodites and Celestialsapiens are conceptual opposites.
On the one hand, you have Anodites. They're known for being hedonistic free-spirits who often use their power for self-satisfaction and, judging by how Verdona spent decades on Earth and needed to reconnect with her roots, or how she probably had to be far from Anodyne to be captured in the first place when she met Max, it wouldn't necessarily be far-fectched to say they have an adventurer, wanderer side that makes them leave Anodyne for unspecified periods of time.
But on the other, you have Celestialsapiens, who not only prefer to be home at the Forge of Creation, surrounded by their kind and away from everyone else, but are so (ironically) restricted in the use of their powers that they literally have to come to an agreement with themselves before they can do anything.
And speaking of powers, Anodites actually only have control over one thing; mana. And yet, their power over it is so vast it becomes an incredibly versatile ability that even allows them to mimic a Celestialsapien's reality-warping, albeit to a lesser extent. Whereas Celestialsapiens, who are canonically the most powerful species of the universe and, by definition, have power over practically everything, have no control over mana, and are therefore incapable of imitating an Anodite's natural abilities.
Also, appearance wise, both species are humanoid while being distinctively non-human. However, it's rather ironic how Anodites, the show's most recurring energy beings, are much more human than Celestialsapiens (do we even know what they're made of?) and their bodies don't look as ethereal. While Anodites are made of compressed mana (which makes them look more solid) and are very expressive, both through facial expressions and their "hair", Celestialsapiens look like literal humanoid galaxies and lack any form of expression.
And finally, even though we've seen both male and female Celestialsapiens, only male ones have had any real relevance (except perhaps that one Celestialsapien Mother) as opposed to Anodites, who were all female as they appeared in the franchise.
But the craziest thing by far has got to be that this is all likely a coincidence.