best rookies in each year?

[butterpuffs]

please fill this↓
2008: shinee, 2pm
2009: 2ne1, b2st, f(x)
2010: infinite, sistar
2011: apink, b1a4, block b
2012: exo, btob, nuest
2013: bts
2014: rv, winner
2015: svt, mx, gfriend, twice, ikon
2016: bp
2017: wanna one, stray kids
2018: izone

 

[svtsasa]

2015: seventeen!

 

[ᴅᴇᴇᴘ ᴅᴀʀᴋ ♔]

2018: Stray Kids and Ateez
2019: Oneus, CIX and X1

 

[xxOddEyeCirclexx]

2018: loona, (g)i-dle
2019: itzy, txt, everglow

 

[myheartizomg]

~in my most humble subjective opinion~
2012: B.A.P, EXO, VIXX
2013: BTS, History
2015: Monsta X
2018: ATEEZ, SKZ
2019: D1CE, Everglow

of course more groups that debuted these years were good too but I can't think of any more atm ^^

 

[marsikk]

2008: Shinee
2009: 2ne1
2010: Infinite
2011: Block b
2012: Exo, Btob
2013: Bts
2014: Winner, Got7
2015: Seventeen, Monsta x, Twice, Ikon
2016: Blackpink
2017: Wanna one, Stray kids, Kard
2018: Gi-dle, Ateez

 

[ImJustKpopTrash]

2007: SNSD
2008: Shinee
2009: 2ne1, F(X)
2010: Sistar
2011: Apink
2012: Exo, AOA
2013: Bts
2014: Winner, Got7
2015: Seventeen, Monsta x, Twice
2016: Blackpink, I.O.I
2017: Wanna one, Stray kids, Kard
2018: Gi-dle, Loona
2019: Itzy, Everglow

 

[ᴅᴇᴇᴘ ᴅᴀʀᴋ ♔]

2012: Exo, btob, nu’est
2013: BTS
2015: Monsta X
2016: Victon, SF9

 

[Mikasa Ackerman]

2015 - Seventeen!!!!!!

 

[𝙩𝙚𝙙𝙙𝙮𝙗𝙖𝙚]

2015 : svt
2016 : nct 127 , ioi
2017 : wanna one
2018 : wanna one
2019 : izone , ateez , x1 , everglow

 

[yunaing]

Please excuse my lack of Kpop knowledge T-T

2014: Mamamoo (Mr Ambiguous was so underrated)
2015: CLC (Pepe too)
2016: Blackpink
2017: T-T not sure who debuted that year
2018: (G)I-DLE
2019: BVNDIT (Hocus Pocus underrated) and ITZY