We at Gateway to Okinawa put together this list as an indication of the level and breadth of the teachers we have access to; however this list is not even close to exhaustive. We can try to arrange and introduction with any teacher on the island.
The list of styles and teachers is in alphabetical order:

Senaha Shigetoshi: Ryusyokai 9th dan

Akamine Hiroshi: Ryukyu Kobudo Shimbukan (Shihan Menkyo)
Kinjo Masakazu: Ryukyu Kobudo Hozonkai HQ Kubagawa Shubukan 8th dan
Shimabukuro Tsuneo: Konan-ryu / Ryukyu Kobudo 9th dan

Shiroma Seihan: Motobu Ryukyu Bujutsu Modi 10th dan

Taira Yoshitaka: Matsubayashi-ryu 10th dan
Toshimitsu Arakaki: Matsubayashi-ryu 10th dan

Akamine Hiroshi: Okinawa Shorin-ryu (Shihan Menkyo)
Gibo Sokuichi: Shorin-ryu 10th dan
Onaga Yoshimitsu: Shinjinbukan 8th dan
Uema Yasuhiro: Okinawa Shorin-ryu Karate-do Kyokai 9th dan

Shimabukuro Zenpo: International Seibukan Shorin-ryu 10th dan

Kinjo Masakazu: Kubagawa Shubukan 8th dan
Shimabukuro Tsuneo: Konan-ryu / Ryukyu Kobudo 9th dan
Shimabukuro Haruyoshi: Uechi-ryu Karate-do Kyokai 9th dan