That would probably not be as useful as you think it would.
In the first place, you have to define what "an influencer" is. Is it any whale? There are a number of whales which don't post at all, and yet give out tons of up votes. There are number of whales which post quite a lot but don't give out much in the way of up votes.
In fact, as my recent research suggests, those groups don't overlap much at all.
Ergo, knowing when someone with significant resources posts to the blockchain is not actually very useful.
If you are looking to be notified when one of a number of users posts to the blockchain, your best bet is probably to get Discord and use Ginabot to follow when one of those people posts. As a bonus, you can probably grab the app for your phone and be alerted no matter where you are.
The best bet for newbies to get attention from whales is still generally, first and foremost, write something that they're interested in. If you don't know what they're interested in – you know what your first bit of homework is.