Kon Knueppel is on track to hit 275 3 pointers made this season, which would put him top 25 all time. He already holds the rookie record ahead of 2nd place (206)
https://www.statmuse.com/nba/ask?q=most+3+pointers+made+by+a+rookie+all-time
https://www.statmuse.com/nba/ask/most-3-pointers-made-in-a-season
The players to have hit more than 270 in a season:
Curry in 2016, 2024, 2019, 2021, 2017, 2025, 2015, 2022, 2023, 2013. In terms of all time position that is (1st, 3rd, 4th, 5th, 6th, 9th, 14th, 15th, 22nd, 23rd)
Harden in 2019, 2020 (2nd, 11th)
Anthony Edwards in 2025 (7th)
Malik Beasley in 2025 (8th, he was one 3PM behind Ant in the same season!)
Klay Thompson in 2023, 2016 (10th, 20th)
Paul George in 2019 (12th)
Buddy Hield in 2023, 2021, 2019, 2020 (13th, 18th, 19th, 24th)
Doncic in 2024 (16th)
DiVincenzo in 2024 (17th)
Damian Lillard in 2021, 2020 (21st, 25th)