Do we have any of those beasts left?

Yep.

The important ones are <board>-release-afdo and test-ap-group.

Both can be reworked to get rid of groups, but it'll need a bit of time.

Also, the toolchain team uses the afdo builders.

And the test-ap-group is used (very rarely) to create a production image run inside the wifi testing infrastructure, somewhere.

Everything is gone, except the AFDO builders, and the test-ap-group builder.

Looking at the config, I believe that these two commands are identical, except that the results are archived in 1 directory vs 3.

# Group Config
cros tryjob test-ap-group

# As individual builders
cros tryjob stumpy-test-ap panther-test-ap whirlwind-test-ap

$ cros tryjob stumpy-test-ap panther-test-ap whirlwind-test-ap
17:09:55: ERROR: These configs are not tryjob safe:
  stumpy-test-ap, panther-test-ap, whirlwind-test-ap
Consider these configs instead:
  stumpy-test-ap-tryjob, panther-test-ap-tryjob, whirlwind-test-ap-tryjob
See go/cros-explicit-tryjob-build-configs-psa.

I guess have some reading to do...but I'll need to add more args:
1) to make sure all build artifacts are preserved.
2) specify an R65 release branch
3) add the change I want included to upgrade netperf.

Oops... I believe I could have marked these configs as tryjob safe.

This will work:
  cros tryjob --production stumpy-test-ap panther-test-ap whirlwind-test-ap