All Terrans have a gimmick to ease in supply. Besides Nova and Tychus starting off with 100 supply, and being capped at that…
Raynor can insta-build them Swann can use his Improved SCVs ability to pile on multiple SCVs to shorten their build time
HH takes regular build time, but do provide 16 (not just 8) supply, and 800 (not just 400) hp.
For Swann, I ended up doing a table of all of his reduced build times. For Supply Depots, grabbing 3 seems to be the sweet spot, reducing bt from 30 to 13…