From what I've read so far, Lovelock made some pretty bold claims like that the Sahara desert would have moved as far north as Paris and that 80% of humans would die by the year 2100. He then admitted that those claims were too alarmist but he hasn't denied climate change that I can see. Where does he say this?
Even if he did, his word (that of a 98 year old chemistry and medical degree holder) is against the work of thousands of climate scientists.
Have you looked into that list of names you copy and pasted from Wikipedia and read their work? I'm looking for peer reviewed papers, not just names. I'm sure I could find a list of names of people claiming that we release chemtrails around at work... would you believe them? Why not? Serious question.