Well I was looking at my Trilogy artbook and well...
https://metroid.wikia.com/wiki/Metroid_Prime_Trilogy_art_booklet
"While searching for Phazon energy to increase her power further, Dark Samus detects the faraway planet Phaaze, the original source of all Phazon. Dark Samus begins her trek across the galaxy to Phaaze. "
Her corruption can corrupt even Phazon and Leviathans themselves of all things :" On the way, she encounters a Leviathan that appears from a wormhole.
Dark Samus infects this Leviatha and is able to control it, giving her the power to open wormholes at will."
"No one knows when Phaaze was born. A planet completely unique in an
infinite universe, unlike any that came before it. Phaaze was alive. A conscious, sentient being."
"Leviathans had the ability to generate wormholes, allowing them to travel to galaxies unbelievably far away." and "This allows her to travel to Phaaze quickly. For Dark Samus, a chance to control the source of all Phazon is a chance to conquer the entire universe." (Confirms that the portals are universal in range)
"After Samus left Tallon IV, the few remaining cells of Metroid Prime began to secretly multiply using the gene information taken from Samus's suit." and "Unbeknownst to our heroine, particles of Dark Samus's Phazon energy floated into space and began to mold themselves into human form." (Confirms that Samus could not completely destroy the soul of Dark Samus and Metroid Prime)
TL;DR:
Dark Samus: Back to
Regenerationn (Mid-High) as Metroid Prime, remains at (Low-Godly) as peak Echoes Dark Samus. Universal Range, High Universal if we take the infinite universe thing literally [Doubt]. Her corruption abilities are >>>> than we thought.