For TRUMP and MELANI, they are meme coins, which mostly has not much purpose, rather than just fun . TRUMP meme coin got such high value because it is owned by a president who said something of supportive effect to the community.
Even though they are meme coins, Trump himself or his sons are behind those tokens. Trump's official X account was used to promote these tokens. So, you can actually imagine people will jump for that token because they know that the president is launching his token. It's all about marketing and popularity when it comes to altcoins.
These mentioned altcoins do not really provide anything special that can attract people to invest. Even privacy coins like XMR have been struggling. Not many people use it these days. People look for coins that may pump and give them some profit.
So, for these coins, whoever can invest more in marketing and have influencers in their support, they have better chance than others.