Toby Threadgill, Richard Elias, Neil Yamamoto, and James Williams all were students of Don Angier at one time and to one degree or another before they became featured on the front of martial Wheaties boxes. Don Angier taught (teaches?) Shidare Yanagi Ryu Aikijujutsu. So when one sees their "stuff" there would be an undeniable Yanagi Ryu Aikijujutsu influence because of the profound influence of Don.
Funny thing was as I was typing that I was smiling at a coincidence -- Stan Pranin had just reposted an interview with Katsuyuki Kondo on the aikido journal facebook page. In that interview Kondo also mentioned Kotaro Yoshida as one his early teachers of Daito Ryu. Yoshida certainly had one heck of a reputation and I think we would probably be having very different conversations today about aiki if Aikido hadn't taken off as a "mainstream" art.
Hidden in plain sight... Hmmm, maybe not all that hidden after all...