Bray Wanderers Limited (Company number IE108824) is the company "trading" as Bray Wanderers FC, the one that holds the League licence. To the best of my knowledge it was incorporated as far back as 1985, when the club was invited to join the League of Ireland.
Bray Wanderers Community Football Club Limited, incorporated in March 2014 (Company no. IE540427), was intended to be the "new" club, with all sorts of new local involvement - businesses &c, as well as other local sports bodies - when the club made its big announcement back in the early part of last season. Have a look at a contemporary
report on Braywanderers.com. It wasn't a Supporters' Trust, but a club initiative to try to build up local support.
Unknowns Football Limited, incorporated in December 2014 (Company no. IE554661), was clearly a vehicle for the intended takeover by the McGettigans/O'Connors group. The O'Connors - Denis in particular - were involved in the 'think tank' that came up with the Community Club idea (referred to in the old news item linked above).