There is not an academic consensus on this, certainly not to the degree of certainty you are painting (which is why it is interesting you keep saying there is a need for "more training" amongst plain people; what do they need training in? The Duluth model?)Because of my involvement in DV, I generally to use the word "abuse" in roughly the standard sense used by DV advocates and counselors.
What you have described is people with personality disorders, which are well documented, have specific criteria, and are familiar to psychiatrists. What is not well described or documented is your vague notion of "abuse", but much of what you say would be well covered by a term like "sociopath" or "psychopath", along with other personality disorders.
Perhaps, if you wish to keep portraying yourself as an expert, you should stick to established, clinical language. In particular, what you describe as an "abuser" often has patterns of behaviour outside of just a marriage relationship, and noticing this patterns is as important if not more important than trying to conduct some kind of "investigation" into someone's private marriage and family details.
It's a lot easier to find out if someone has a proven pattern of sociopathic tendencies in business relationships, for example, or other areas of personal conduct. And these kinds of behaviours are also very ungodly and should be addressed by church. My experience in being a denomination that takes such things seriously is that this kind of person is often caught, required to repent, and if they refuse to do so, expelled long before their tendencies that you like to call "abuse" end up affecting their marriage. A person who chooses to marry such a person does so with full knowledge of their behaviour and reputation.
Or you can keep on banging your Duluth Model drumbeats and portraying yourself as an expert, which frankly, with respect, you are not, and worst of all I believe you and your organisation are quite susceptible to being manipulated and exploited by sociopaths, or shall we say, abusers. Indeed, some of us suspect this has already happened.