Layout or data table?

Hello all,

I hope you can assist.

On our website we have some tables that contain information on committee member names and their roles, so for example:

Committee members

Chair
Mr A*
Treasurer
Mrs Y
Ordinary member
Mr C
Ordinary member
Mr G
Ordinary member
Ms P

In this case, the title is a h2 and each role in the left-hand cell carries the <th scope> value.  To all intents and purposes, we have treated it as a data table, but is it a layout table because the information could be presented in linear fashion another way? And if so, should it have a role="presentation" value in it?

I feel this is a bit of a grey area between the two and would appreciate your thoughts. It reads out fine in NVDA so I don't think it's an issue, but wanted to make sure we were accounting for our tables correctly!

With thanks
Louise

This email (and attachments) are confidential and intended for the addressee(s) only. If you are not the intended recipient please notify the sender, 
delete any copies and do not take action in reliance on it. Any views expressed are the author's and do not represent those of IOP, except where specifically 
stated. IOP takes reasonable precautions to protect against viruses but accepts no responsibility for loss or damage arising from virus infection. 
For the protection of IOP's systems and staff emails are scanned automatically. 

Institute of Physics. Registered charity no. 293851 (England & Wales) and SCO40092 (Scotland)
Registered Office:  37 Caledonian Road, London, N1 9BU