I couldn't find anything for this season, but Donovan Mitchell had the highest usage percentage for the Jazz in 2020-21, at 33.5 percent.

who leads the utah jazz in usage rate this year
Interpreted as:
Who leads the utah jazz in usage rate with a minimum of 1000 minutes played per 82 team games this year?
2020-21Mitchell2020-21Clarkson2020-21Conley2020-21Bogdanovic2020-21Niang2020-21Gobert2020-21Ingles2020-21Favors2020-21O'Neale33.529.823.122.717.516.816.613.09.6
NAMESEASONTMGPUSG%MPGPPGRPGAPGSPGBPGTPGFGMFGAFG%3PM3PA3P%FTMFTAFT%MINPTSREBASTSTLBLKTOVPF+/-
Donovan MitchellDonovan Mitchell2020-21UTAUTA5333.533.426.44.45.21.00.32.89.020.643.83.48.738.65.06.084.51,7711,4012352775215147117+287
Jordan ClarksonJordan Clarkson2020-21UTAUTA6829.826.718.44.02.50.90.11.76.715.842.53.18.834.71.92.189.61,8181,2512741686110115110+301
Mike ConleyMike Conley2020-21UTAUTA5123.129.416.23.56.01.40.21.95.612.544.42.76.641.22.42.885.21,4988271773057099998+548
Bojan BogdanovicBojan Bogdanovic2020-21UTAUTA7222.730.817.03.91.90.60.11.85.612.843.92.56.439.03.23.787.92,2161,225281136454128115+419
Georges NiangGeorges Niang2020-21UTAUTA7217.516.06.92.40.80.30.10.72.55.643.71.74.142.50.30.395.71,1545001765925851116+353
Rudy GobertRudy Gobert2020-21UTAUTA7116.830.814.313.51.30.62.71.75.58.267.50.00.10.03.35.362.32,1871,0159608940190118163+728
Joe InglesJoe Ingles2020-21UTAUTA6716.627.912.13.64.70.70.21.74.18.448.92.76.145.11.11.384.41,8678092443184512117120+454
Derrick FavorsDerrick Favors2020-21UTAUTA6813.015.35.45.50.60.51.00.52.33.663.80.00.00.00.91.273.81,03936937644326836143+37
Royce O'NealeRoyce O'Neale2020-21UTAUTA719.631.67.06.82.50.80.51.22.55.544.41.53.938.50.50.684.82,241496485181573283182+471
StatMuse has season-level data for usage percentage going back to the 1977-78 season.

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