Among the three you have mentioned, I am only familiar with NOIA. We have different opinions, for others, they would consider them as hidden gems but for others, they don't. Not to promote the project but personally, I can see potential with NOIA as I am somehow interested and I've been monitoring it for some time already. The word hidden gem for me is too much to consider NOIA as one, but I can still see that they are a promising one. But of course, it's always a must to do prior research before investing in any token and not just rely on others' opinions.