XiaoLi,6705462234,lxiao@unc.edu,NC764
NatkinPook,8044344528,wnatkin@vcu.edu,VA22345
EliziMoe,5208534566,emoe@ncsu.edu,AZ85282
MaTa,4345667345,mta@yahoo.com,TX91030
DianaCheng,5203456789,dcheng@asu.edu,WY4587
JacksonFive,5206564573,jfive@ncsu.edu,AZ85483
AdiSrikanthReddy,6578904566,sadi1@asu.edu,WS67854

Xiao Li 6705462234 lxiao@unc.edu NC 764
Natkin Pook 8044344528 wnatkin@vcu.edu VA 22345
Elizi Moe 5208534566 emoe@ncsu.edu AZ 85282
Ma Ta 4345667345 mta@yahoo.com TX 91030
Diana Cheng 5203456789 dcheng@asu.edu WY 4587
Jackson Five 5206564573 jfive@ncsu.edu AZ 85483
Adi SrikanthReddy 6578904566 sadi1@asu.edu WS 67854

awk -F "," ' {print $1, $4, $3, $6}' data3

awk -F, '
  {c = match($1,/[a-z][A-Z]/)}
  c>0 {$1 = sprintf("%s %s", substr($1,1,c), substr($1,c+1))}
  {c = match($4,/[A-Z][0-9]/)}
  c>0 {$4 = sprintf("%s %s", substr($4,1,c), substr($4,c+1))}
  1' file.csv
Xiao Li 6705462234 lxiao@unc.edu NC 764
Natkin Pook 8044344528 wnatkin@vcu.edu VA 22345
Elizi Moe 5208534566 emoe@ncsu.edu AZ 85282
Ma Ta 4345667345 mta@yahoo.com TX 91030
Diana Cheng 5203456789 dcheng@asu.edu WY 4587
Jackson Five 5206564573 jfive@ncsu.edu AZ 85483
Adi SrikanthReddy 6578904566 sadi1@asu.edu WS 67854

awk -F, '
  {c = match($1,/[a-z][A-Z]/)}
  c>0 {$1 = sprintf("%s %s", substr($1,1,c), substr($1,c+1))}
  {$4 = sprintf("%s %s", substr($4,1,2), substr($4,3))}
  1' file.csv

perl -F, -ne '
  print join " ", map { s/(?<=[[:lower:]])(?=[[:upper:]])|(?<=[[:upper:]])(?=[[:digit:]])/ /; $_ } @F
' file.csv
Xiao Li 6705462234 lxiao@unc.edu NC 764
Natkin Pook 8044344528 wnatkin@vcu.edu VA 22345
Elizi Moe 5208534566 emoe@ncsu.edu AZ 85282
Ma Ta 4345667345 mta@yahoo.com TX 91030
Diana Cheng 5203456789 dcheng@asu.edu WY 4587
Jackson Five 5206564573 jfive@ncsu.edu AZ 85483
Adi SrikanthReddy 6578904566 sadi1@asu.edu WS 67854

awk '
  { gsub(","," ")
    $0=gensub("([[:upper:]])([[:digit:]])","\1 \2","g")
    $0=gensub("([[:lower:]])([[:upper:]])","\1 \2","g")
    print
  }' file.csv