I disagree fiercely with some of the beliefs of a couple of people on that list, but I wouldn't label any of them as "apostate" or a "false teacher". As far as I can tell, they all intend to be following Jesus and to be preaching the message of Jesus as best as they understand it. Where I disagree with them, I would prefer to label them as "a Christian with whom I disagree" or "a Christian who is mistaken about some things".
If at one point you thought they were correct, and now you have come to disagree with them, I don't think there's any need for repentance. Simply acknowledge that you have changed your mind in light of new information, and be grateful for the opportunity to have learned new things.
Recently it has become clear that of the people on that list, John MacArthur is clearly a Nestorian, so I feel compelled to withdraw my endorsement of him. I was already troubled by how he treated Hank Haanegraaf when he converted to Eastern Orthodoxy with his family while battling cancer, with MacArthur accusing him of apostasy, which is absurd, and now with John MacArthur teaching full-on Nestorianism, that’s kind of beyond the pale of what I would regard as theologically acceptable.
On the other hand, Billy Graham was much loved by everyone, including the Russian Orthodox Church. During the Soviet Union, the ROC was severely restricted in its ability to preach or engage in Sunday School or other catechetical activities, but Billy Graham, by virtue of his international reputation, was able to travel to the Soviet Union to preach, with a formal blessing to do so from the Moscow Patriarchate, and indeed they were so grateful that Metropolitan Hilarion Alfeyev, a brilliant composer of classical and sacred music and the former director of external church relations, who was removed from that post due to his pacifism last year and reassigned to be the Metropolitan of Budapest and Hungary*, was at Billy Graham’s bedside when he reposed in the Lord.
*In Hungary there is a large expat Russian community as well as some Hungarian converts from the Hungarian Greek Catholic Church (a Byzantine Rite church that uses the Eastern Orthodox liturgy, in full communion with Rome, similar to the Ukrainian Greek Catholic Church, the Ruthenian Greek Catholic Church, and the Italo-Albanian Greek Catholic Church (which operates mainly in Siciliy and caters to persons of mixed Italian-Albanian descent, but is also interesting in that it is the heir to Byzantine Rite churches that have always operated in Sicily due to the island’s status as a Greek colony in antiquity, and also as part of the Byzantine Empire intermittently, like Ravenna). The Hungarian Greek Catholic Church, like the Italo-Albanian Greek Catholic Church, and the Croatian Greek Catholic Church, is interesting in that it operates in a country which does not have an indigenous Eastern Orthodox church, but nonetheless celebrates the Eastern Orthodox liturgy with all of the usual features, even the veneration of important Orthodox saints not venerated in Latin Rite Catholicism, for example, the second sunday in Lent in both the Eastern Orthodox and Greek Catholic / Byzantine-Rite Catholic churches the second sunday is the Sunday of St. Gregory Palamas.
Speaking of which I would endorse St. Gregory Palamas over several of the names on that list, but his writings are notoriously technical and challenging to read. So probably the best bet would be someone like Metropolitan Kallistos Ware, memory eternal, or Archpriest Andrew S. Damick if you want to find a contemporary Orthodox theologian who is accessible and reiterates the historical teachings of the church.
And for general purpose catechesis, one cannot go wrong with CS Lewis, for example, his excellent work Mere Christianity. I also enjoy the writing of Pope Benedict XVI and the homiletics of Dr. James Kennedy, may their memories be eternal. NT Wright is very popular among contemporary audiences but I haven’t been particularly intrigued to examine his work, but I have heard it is quite good - as contemporary Anglican scholars go I am more interested in the theological studies of the retired Archbishop of Canterbury Dr. Rowan Williams, who I greatly preferred to the current guy whose name escapes me for the moment.
