The modern cube you always wish you had. Archetypes are totally just a guide. The cube leans towards good stuff, so you can let the draft speak to you and combine colors however you want.
2 color archetypes:
Red blue prowess spells
Red green chunkers
Red white aggro
Red black sacrafice
Red black kill spells
Green white midrange (faster or slower possible)
Green blue good stuff
Green black buy time for planeswalkers
Blue white blink
Blue white control
Blue black amazing spells
White black reusable creatures
White black reanimator