TOTAL newbie here (who is dreaming of a Swan/ Dolphin stay for proximity!) and I’m trying to figure out where to find these great prices everyone talks about.

When I look at Marriott website or even online travel deal sites, the prices I see for Swan & Dolphin are not cheaper than Disney moderates. What am I missing?
Time of year, occupancy levels, when you book, and eligibility for special rates all make a difference. A lot of the rates you've seen posted here over the last year were pandemic rates to get bodies in beds. Given the 50th and "revenge travel" are pushing occupancy back to "normal" levels, the screaming deals have largely disappeared.
If you are eligible, check discount rates. AAA, AARP, Educator, Healthcare, Military, Government, Bonvoy, etc.
I did the Swan Xmas week 2020, and got an amazing AAA rate, average $170/night.
Few months ago, I reserved Xmas week this year at the Dolphin for an average of $238/night, AAA rate. If I were to book it today, same rate, same time, $293/night. (Cancellable rates, BTW)
Swan cancellable AAA rate for that timeframe is $371 (it was $340-something when I first looked months ago).
For comparison, Pop starts at $291 for Xmas week.