I haven't either, and since their official statements are often made by the OIC rather than in the name of any one particular government, it's not easy to figure out from the regular headline news.
However, the Canadian Montreal International Forum (FIM) - which
describes itself as an international NGO, Global Governance, think tank - summarized it as follows
in this document (which seems to be a few years old by now):
"Influential governments in terms of political, religious, economic weight and activity in the OIC include: Saudi Arabia, Pakistan, Malaysia, Turkey, and Iran. Other members that have a significant influence because of their budgetary contributions include: Kuwait, the United Arab Emirates, and Libya." The document also includes a more detailed description of what it considers influential governments within the organisation.
Anyway, steering back to the topic of internet access as a human right, one of the "the fathers of the Internet"
Vinton Gray Cerf doesn't think the term is appropriate. In January this year he wrote
an article for the New York Times titled 'Internet Access Is Not a Human Right'. He wrote:
"Over the past few years, courts and parliaments in countries like France and Estonia have pronounced Internet access a human right. But that argument, however well meaning, misses a larger point: technology is an enabler of rights, not a right itself. There is a high bar for something to be considered a human right. Loosely put, it must be among the things we as humans need in order to lead healthy, meaningful lives, like freedom from torture or freedom of conscience. (...)
The best way to characterize human rights is to identify the outcomes that we are trying to ensure. These include critical freedoms like freedom of speech and freedom of access to information — and those are not necessarily bound to any particular technology at any particular time. Indeed, even the United Nations report, which was widely hailed as declaring Internet access a human right, acknowledged that the Internet was valuable as a means to an end, not as an end in itself."