Apple Pro Display XDR has a pixel density of:
215.70

A.K.A. A1999
Released: 2019

Resolution: 6016×3384 32″ display

Totaling 20.36mp (megapixels) and having a PPI of 215.70

Category: Desktop LCD
Tags: tft, ips, flossy, vesa, 6k

Pro Display XDR

Pro Display XDR
Type	Computer monitor
Inception	June 3, 2019; 2 years ago (2019-06-03)
Manufacturer	Apple Inc.
Available	December 10, 2019; 18 months ago (2019-12-10)
Slogan	Believing is seeing.
Website	apple.com/pro-display-xdr/

This righthand infobox courtesy of Wikipedia.