Released in November, Surging Sparks is a Pikachu-centric expansion, and the recently released Prismatic Evolutions mirrors Sword & Shields most expensive set, Evolving Skies, which focuses on Eevee and its evolutions
They're also relatively easy to build back up if they get removed just Amass again and you'll make a fresh token ready to build up
Sacrifice after IV.) I - Wark - Create a 2/2 green Bird creature token with "Whenever a land you control enters, this token gets +1/+0 until end of turn."II, III, IV - Kerplunk - Creatures you control gain trample until end of turn
Updates can lag fast-moving cards
Basically, the top three are fairly interchangeable but worth a meaningful amount more than the bottom two, based mostly on the relative value of the reprints in each deck