I think tweets of elon musk don't have an impact anymore or at least not that big of an impact as his first tweet regarding cryptos and later his tweet about dogecoin had. This is a normal process, the more often something has happened before, the more people expect it and the less surprised they are about it. I personally wouldn't invest in any of the projects you listed because i generally dislike meme-coins because they have no use-case and i think that they harm the whole crypto space and of course because of the market situation in that we are right now. I think now is the time to load up on established projects, of course only if you think that the market won't drop any lower.
Very risky to get into these meme coins. Though doge has use case before in gambling and as transfer purposes, it is now getting expensive to use this old alt. There are now other alts with cheap fees like TRX or XRP. Elon will tweet again and again, but you need to mind your own strategies in this market. Because if someone will follow his tweets, the risk of losing your funds is high, if you exit at the wrong time. Better look for projects that have tangible and active application in the market.