I suspect that may depend on exactly what you mean by "on record".
If you mean named individuals with independently verifiable identities and trading records visible online, then the answer's "I don't know" ... but I'd suggest to you that their NDA's might preclude that from happening (as indeed my own would) - and I'd further suggest that you probably know this, too, really.
If you accept less formal criteria for being "on record", then the answer's certainly and clearly "yes", and
many of them.
Since posting a little here, myself, intermittently, about Al Brooks, in other people's threads, over the last year or two, I've been contacted on at least three occasions (I think possibly four) by private message/thread by other institutional traders who are now-non-posting members here (for various different reasons), all of them sharing my perspectives and experiences of this subject and some of them warning me about the extraordinary prejudices and misinformation on display here about Al; I've had some very interesting conversations with many colleagues as a result, and I've even made at least a couple of interesting and welcome online friends/contacts because of it.
There are also many (I think some of them even with full names, and possibly "verifiable" if you can be bothered to) in the futures.io forum. And probably elsewhere, too.
But if all that doesn't satisfy you, then from your perspective the answer's probably "no".
I don't care much, either way, myself: at the end of the day, it doesn't really affect me what people say about his textbooks and teaching - my perspective is that no matter how anyone else maligns him, and no matter for what reasons, I'm one of the evidently substantial group of people who fortunately don't have to pay back to anyone the money we've made (originally, in my case, directly for my own accounts, and more recently indirectly in the form of the acquired skill-set that produces my salary and bonuses for trading OPM) by following his teaching.
I'll add that I think it's quite a good and healthy thing, in principle, in this industry, to have some skepticism about "vendors", and Al Brooks
is now technically a "vendor", as well as a trader ... though obviously there's a world of difference between having written 3 or 4 textbooks which Wiley has published at about $50 each and is probably paying him a 12.5% royalty on the sales, and being a hype-driven, self-promoting con-man hard-selling trading courses for $3,000 or $5,000 or whatever image people conjure up when they think of "trading service vendors". For a wide range of reasons, in all subjects, some people write textbooks (fortunately for people like me, who needed to study them to be able to make a living). To me it seems self-evident that Al Brooks' teaching isn't anyone's "primary income". But that's just my perspective, as the saying goes.