The Idaho Press Tribune has out a general piece on lobbyists at the Idaho Legislature, an evergreen but useful subject. (Your scribe wrote two or three of them for newspapers back in the day.)
Most specifically interesting, as was usually the case, was the legislators' ranking of the groups. The exact criteria to be used weren't noted, and regardless it probably reflects what it often does: Foremost the relationship many legislators have with the lobbyists under considerations; but excluding the contract lobbyists - the hired guns - who represent as many as a dozen (or more) separate organizations.
Not especially surprising, the Associated Taxpayers of Idaho was on top. That probably reflects in part the very seasoned status of its executive director, Randy Nelson, and the organization's role as a watchdog skeptical of taxes (although Nelson takes care to do more precise reporting and statistical analysis rather than lobbying of the putting-the-arm-on sort).
The city and county associations ranked, which may surprise people accustomed to hearing little non-critical about government from this legislature. But the lobbyists there too are of long standing and highly seasoned.
The highest ranking groups among the commercial groups are the Food Producers of Idaho, the Idaho Association of Commerce & Industry and the Idaho Association of Realtors. The Farm Bureau was on the list, as expected; many would rank it in the top three or so, but it ranked number eight here.