TFB took a stab at which newcomers will play and which will RS in 2019 --
Will Play
RB Jordan Whittington
WR Bru McCoy
DE Jacoby Jones
LB Marcus Tillman
May Play
WR Jake Smith
LB David Gbenda
LB Juwan Mitchell
LB Caleb Johnson
S Tyler Owens
CB Kenyatta Watson
CB Marques Caldwell
Redshirt
OL Willie Tyler
OL Tyler Johnson
OL Isaiah Hookfin
OL Javonne Shepherd
TE Brayden Liebrock
TE Jared Wiley
WR Marcus Washington
WR Kennedy Lewis
QB Roschon Johnson
DL T’VondreSweat
DE/LB Peter Mpagi
DE Myron Warren
S Chris Adimora
LB De’Gabriel Floyd
RB Derrian Brown
Can see their reasoning at link
Open Post | Weekend, May 24th - 26th - The Football Brainiacs - UT Edition
2 examples --
" .... Texas appears to have finally reached a point where they can redshirt entire Offensive Line classes after accomplishing the feat with their 2018 group (Angilau, Moore, Jones, Ghirmai). The hope is that none of the Offensive Line members from this class see the field until 2020 at the earliest.
* * *
I don’t see a scenario where Marcus Washington or Kennedy Lewis see the field as true freshmen. The same goes for Jared Wiley and Brayden Liebrock, but more so due to the fact that Texas has very rarely used more than one Tight End on the field at any time in Coach Herman’s first two seasons....."