
I went down an internet rabbit hole and found this:
itep.org
It looks like the report/analysis is based upon data through 2018. As it's a 6th edition, perhaps they will update it at some point.
Who Pays: A Distributional Analysis of the Tax Systems in All 50 States (the sixth edition of the report) is the only distributional analysis of tax systems in all 50 states and the District of Columbia. This comprehensive report assesses tax fairness by measuring effective state and local tax rates paid by all income groups.[1] No two state tax systems are the same; this report provides detailed analyses of the features of every state tax code. It includes state-by-state profiles that provide baseline data to help lawmakers and the public understand how current tax policies affect taxpayers at all income levels.
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Who Pays? 6th Edition
No two state tax systems are the same; this report provides detailed analyses of the features of every state tax code.

It looks like the report/analysis is based upon data through 2018. As it's a 6th edition, perhaps they will update it at some point.