I think for a better chance to get 1000x, look for coins with a market cap of 1m or lower. Dog logo not necessary but I think it def will help.
These two criteria are making me annoying as these are not about usecase or adaption level or even not about marketing. This simply shows how the altcoin industry is working on hype and pumps. Honestly not a healthy environment for the investors who are into usual due diligence process to filter out right opportunities.
I am not sure about any 1000x coin but from my personal watch list I found 2 coins with potential 10x growth.
First one is, after India's regulation on crypto, the Indian exchange wazirx's token wrx is trading right now 10x lower from the ATH; this might get chances to scale old peaks in long run like in next 2 to 3 years. Similarly waves also trading 10x lower from its recent peak; might bounce back.
If there is annoying there then it must be the dog logo but market cap is too formal and always been part of how the coin works. Don't worry because those who look for easy ways to get rich are going to suffer later on but there are still serious investors who invests only in coins according to their use cases.
1000x is hard to find but why not go instead on coins which are sure to gain 10x or less? That should save us a lot of time finding them and can also decrease our chances of losing. The coins WRX and Waves are popular coins so they will surely recover after some time. 10x might even small for them so we may need to hold longer if we want to earn more.