However, I strongly suspect that the official recommended daily intake of choline is wrong, because it is practically impossible for someone eating a healthy diet to reach that level of choline intake.
Except for eggs, liver is the food with the highest content of choline, much higher than almost everything else. Nevertheless, it is impossible to eat enough liver daily to get enough choline, because that would require to eat an excessive amount of vitamin A. With eggs it would possible to get enough choline, but that would require eating 4 eggs every day, which is considered too much by many studies.
I believe that the study that established the recommended daily intake of choline based on the appearance of fatty liver was flawed, because there must have been some other factor, in the diet or in the diseases of the monitored patients, which diminished their internal capacity of choline synthesis, so they required supplementation with a higher quantity of choline than most people.
Among the extra minerals that vegans need, is also calcium. Some types of Centrum contain calcium, but not all of them. Most types of Centrum should include the other supplements needed by vegans and not explicitly mentioned by you, e.g. iodine, vitamin B12, vitamin D.