@homer not sure if this is exactly what you were after with the second part of your comment, but here is a look at how the Brewers have performed with different leadoff hitters along with their individual numbers while batting leadoff.
First, for some context, league average out of the leadoff spot is currently at 255/326/412 (108 wRC+) with about 97 runs, 21 HR, and 21 SB.
Brewers leadoff hitters have struggled to the tune of 243/309/379 for a 92 wRC+ (25th) with 91 runs (20th), 14 HR (26th), and 40 SB (2nd). As to the individual results…
Andruw Monasterio
(1 W - 2 L | 2.33 R/G)
18 PA | 58 wRC+
Oliver Dunn
(3 W - 1 L | 10.0 R/G)
20 PA | 44 wRC+
William Contreras
(4 W - 4 L | 4.63 R/G)
36 PA | 163 wRC+
Joey Ortiz
(6 W - 3 L | 3.89 R/G)
45 PA | 76 wRC+
Sal Frelick
(12 W - 7 L | 4.26 R/G)
81 PA | 38 wRC+
Jackson Chourio
(16 W - 15 L | 4.65 R/G)
143 PA | 108 wRC+
Brice Turang
(47 W - 35 L | 4.95 R/G)
370 PA | 95 wRC+