Trae Young has the most games for the Hawks with 30+ points and 8+ three-pointers, with 7 games.

atlanta hawks player with most games with 30 points and 8 three points
Interpreted as:
atlanta hawks player with most regular-season games with 30 or more points and 8 or more three points
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YoungReddishBogdanovicGallinariSmithWilkins711111
NAMEGPPTS3PMMPGPPGRPGAPGSPGBPGTPGFGMFGAFG%3PA3P%FTMFTAFT%MINREBASTSTLBLKTOVPF+/-
Trae YoungTrae Young72925637.441.73.47.40.90.35.713.123.655.813.658.97.48.191.22622452624013+57
Cam ReddishCam Reddish133840.133.04.00.00.02.04.011.023.047.813.061.53.03.0100.040400242-6
Bogdan BogdanovicBogdan Bogdanovic132840.532.03.03.02.00.00.09.022.040.916.050.06.07.085.741332000+11
Danilo GallinariDanilo Gallinari1381033.538.06.02.02.00.04.013.016.081.312.083.32.02.0100.033622042+25
Steve SmithSteve Smith136941.036.02.02.00.00.04.010.020.050.015.060.07.07.0100.041220043-1
Dominique WilkinsDominique Wilkins137837.037.06.05.00.00.03.014.022.063.612.066.71.01.0100.037650030
StatMuse has game-level data for three-pointers going back to the 1979-80 season.