It is well known that Saudi money funds the extremist Wahhabi ideology in many of these groups. Indeed, groups like ISIS follow such extremist Sunni beliefs as do groups like Al Qaeda.
Of the Arab countries actively supporting extremists, Saudi Arabia is the number one sponsor even after the connections were established to the 9-11 hijackers and Al Qaeda terrorists.
Nevertheless, we have the odd image of Saudi Arabia and other countries blockading and isolating Qatar. It may be true that Qatari money is supporting extremists but Saudi Arabia is hardly in a position to point fingers in light of this and other reports.