One wacky, yet possibly workable solution is to put Turkish into the "Tartar" culture group along with Crimean, Kazani, Astrakhani, Nogai etc. Although the Ottos never conquered most of these culture regions and don't completely share backgrounds with these cultures, linguistically/ethnically it still makes WAY more sense than grouping them with Arabic cultures.
Putting Turkish into the Tartar culture group would not only break up the unholy, horrendous behemoth that is the "Levantine" culture group, but also increase Ottoman-Russian hostility and prevent Turko-Russian hugboxes against Poland, due to the Ottoman AI presumably desiring the Tartar provinces from Russia (assuming they do conquer them as usual).
Of course, this could lead to the unfortunate side effect of the Ottoman AI rampaging northwards to the Urals as early as 1460, but it still might nevertheless be worth a try, if presuming, putting Turkish into its own lonely culture group, or re-adding the Oghuz group for Nogai-Turkish-Turkmeni-Uzbek (or something similar and moving each of these cultures into it) are off the table.
Putting Turkish into the Tartar culture group would not only break up the unholy, horrendous behemoth that is the "Levantine" culture group, but also increase Ottoman-Russian hostility and prevent Turko-Russian hugboxes against Poland, due to the Ottoman AI presumably desiring the Tartar provinces from Russia (assuming they do conquer them as usual).
Of course, this could lead to the unfortunate side effect of the Ottoman AI rampaging northwards to the Urals as early as 1460, but it still might nevertheless be worth a try, if presuming, putting Turkish into its own lonely culture group, or re-adding the Oghuz group for Nogai-Turkish-Turkmeni-Uzbek (or something similar and moving each of these cultures into it) are off the table.