Bit premature to announce clean sweep since the oldest NPOY award, the Honda Sports Award for basketball, hasn't been announced yet. It's been given out since 1977. Stewart is the only 3 time recipient. Gustafsen won it last year and I am sure Sabrina will get it this year as she is one of the 4 finalists nominated by the WBCA. The winner is chosen by the votes of administrators from every NCAA member institution, with each institution having one vote.
The first time the Wooden award was given to a woman player was 2004. Since then the players to get all 5 awards (Wade, AP, Naismith, USBWA, & Honda) in the same year have been Augustus in 2005 as a junior (missed it as a senior since Latta got the USBWA), Maya as a senior in 2011, Griner as a junior in 2012, Stewart twice as a jr/sr (15/16), Plum in 2017, and Wilson in 2018. the only two times that a player got the 1st 4 and didn't get the Honda were 2009 when Maya had 4, but her teammate Renee Mongomery beat her out for the Honda and Griner's senior year when EDD beat her out for the Honda Award.
Also if Sabrina gets the Honda Award she will join only Maya and Breanna to have those 5 awards plus the Senior Class Award which has been given out since 2002 when Sue Bird got the inaugural Senior award. As noted Augustus and Griner missed their clean sweep in their senior year. Augustus got the 2006 Senior award, but EDD did beat out Griner in 2013 like she did for the Honda. Also surprisingly Oregon State's Wiese beat out Plum for the 2017 Senior award and Gabby Williams beat out Aja Wilson in 2018. Also since the espnW NPOY has only been given out since 2014 (from what I can tell), only Breanna and Sabrina would get all 7 awards if Sabrina takes home the Honda. Then it's a clean sweep.
Not sure if this is the point you're trying to make, but getting a clean sweep isn't more prestigious than a different POY who wins majority but doesn't sweep. It usually means there was another player in college basketball who had a POY caliber season, or that there was an outlier publication. Look at Stewart in 2014. She had an amazing season but also Chiney Ogwumike/Odyssey Sims had ridiculous years averaging 25-30ppg for top 8 teams. Stewart's 2014 season was just as good, if not better, than her 2015 season but there wasn't competition for POY in 2015 outside of Jewell Loyd (who won ESPN POY which you haven't listed) so she won more POY awards in 2015 than 2014.
This year there really wasn't anyone else who even came close to providing competition. The other top teams (Baylor/SC) were more balanced statistically and didn't have a major standout like Ionescu.
Also worth noting, Wade Trophy voters historically have had several head scratching choices that go against the grain:
-Catchings/Ralph won most POY awards in 2000 but the choice that year was Edwina Brown who was a 2nd Team AA by some publications and whose team was a 7 seed in the NCAAs.
-Chamique Holdsclaw had one of the best seasons in NCAA history (led her team to an undefeated title, massive stat line too) but inexplicably lost the Wade Trophy to Penicheiro. Holdsclaw swept every other award.
-Sims over Stewart for Wade was one of the only awards Stewart didn't win in 2014.
-Wiggins over Parker in 2008 was the only one Parker didn't win. Wiggins didn't finish top 2 in AP POY and was as head scratcher of a choice for Wade.
Lastly, I wouldn't count Senior Class Award as a POY award since academics and other factors play a huge role. It doesn't necessarily go to who had the best season. Ex. Plum clearly had a better year than Wiese by any measure, Wilson/Vivians had a better year than Gabby Williams, etc.
Sabrina deserves to sweep every POY award this year--she was the clear standout and had a fantastic season, but winning all of the awards doesn't elevate her POY season above anyone else's.
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