Good question.
"Received NCRF" means that the system has received a New Committer Request Form. This is a bit of an historical term that means that the committer provisioning process has been started. Any committer in this state has not engaged in the process yet.
"Received NCRF; individual; received ICQ; waiting for ICA" means that the committer has completed the "Committer Questionnaire" and has indicated that they are an "Individual Committer" (meaning that they do not work for an Eclipse Foundation Member Company) and that we are waiting for them to send emo-records an Individual Committer Agreement (ICA). It will stay in this state until after the EMO Records team notes their receipt.
"Sent to webmaster for provisioning" means that we have everything that we need from the committer and a request has been added to the webmaster's queue to set up the necessary permissions.
If you see "Already a committer on one or more projects.", then that individual is already a committer and so should already have the necessary paperwork in place. The EMO Records team normally takes care of these ones first.
There are some other states, but we usually move through those ones pretty quickly so you should rarely see them.
HTH,
Wayne