A more basic example

use warnings; use strict; 

#my $testout=`$test list`; 
my $testout='        CoID:       Type:  State:    ID:
        ExampleCo   A      former    97546
        ExampleCo   B      pending   48541
        ExampleCo   A      ready     75521
        ExampleCo   B      former    50123
        ExampleCo   A      contact   60047
        ExampleCo   B      contact   19425
';
my @order; 
my $array={}; 
my @sparse; 
my @compact; 
for my $l (split("\n",$testout)) { 
  chomp $l; 
  my ($coid,$type,$state,$id)=split(' ',$l,4); 
  next unless ($type eq 'A'); 
  my $h={ID=>$id,CoID=>$coid,State=>$state};
  push @order,$id; 
  $array->{$id}=$h; 
  $sparse[$id]=$h; 
  push @compact,$h; 
  } 

print 'From hash'."\n"; 
for my $o (@order) { 
  my $h=$array->{$o}; 
  print ' ID = '.$h->{ID}."\n"; 
  print '  CoID  = '.$h->{CoID}."\n"; 
  print '  State = '.$h->{State}."\n"; 
  }

print 'iterate compact'."\n"; 
for my $h (@compact) { 
  next unless (defined $h); 
  print ' ID = '.$h->{ID}."\n"; 
  print '  CoID  = '.$h->{CoID}."\n"; 
  print '  State = '.$h->{State}."\n"; 
  }

print 'index sparse'."\n"; 
for my $o (@order) { 
  my $h=$sparse[$o]; 
  print ' ID = '.$h->{ID}."\n"; 
  print '  CoID  = '.$h->{CoID}."\n"; 
  print '  State = '.$h->{State}."\n"; 
  }
[download]

result

From hash
 ID = 97546
  CoID  = ExampleCo
  State = former
 ID = 75521
  CoID  = ExampleCo
  State = ready
 ID = 60047
  CoID  = ExampleCo
  State = contact
iterate compact
 ID = 97546
  CoID  = ExampleCo
  State = former
 ID = 75521
  CoID  = ExampleCo
  State = ready
 ID = 60047
  CoID  = ExampleCo
  State = contact
index sparse
 ID = 97546
  CoID  = ExampleCo
  State = former
 ID = 75521
  CoID  = ExampleCo
  State = ready
 ID = 60047
  CoID  = ExampleCo
  State = contact
[download]

This example does not need IPC::System::Simple to be preinstalled, uses the `$test` call format that you implied, captures only the type=a records, and shows it stored in a hash, compact array and sparse array, iterating over the compact array and indexing the sparse array.

if you prefer to install IPC::System::Simple that is a much prettier program (edit:) and you add the test for type=a

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