Are Nasser and Mobutu supposed to be communists in your model of history? They are not in mine.

Mobutu consolidated power only in late 1965, and there were many other relevant people involved about whose degree of affiliation with communism we could debate. (And frankly, I'm not very knowledgeable about, or particularly interested in, the details of this particular war.) The point however is that a reflexively and consistently anti-communist U.S. policy would have simply backed Tshombe and his Katangan government.

As for the Suez crisis, the point is not about Nasser's ideology. The point is that the U.S. took the same side as the Soviet Union and a Soviet-aided regime (though, as you correctly point out, not a Soviet-run one), and against European colonial powers that opposed the latter. Again, a model that postulates consistent anti-communism on part of the U.S. cannot predict this; it will require at the very least a few epicycles.

Moreover, note that you were the one who claimed that the U.S. anti-communism was simple and clear-cut. To dispute that claim, it is enough to demonstrate that the situation was in fact much more complicated and murky. It is not necessary to provide examples where the U.S. clearly and indisputably aided communists. (Though Castro and arguably Mao provide such examples.)

Look, I'm not interested in having a discussion where "communism" has been redefined to mean pretty much the entire modern world.

I don't know at whom, or what, this is supposed to be directed. While I readily acknowledge that you may have reasonable disagreements with my opinions, I don't think this is a reasonable response to anything I have written in this thread or elsewhere.