The accounts you're seeing are probably using a mix of approaches. Most SMM panels for X are garbage right now because of the API restrictions, so the smart money is on private setups.
What works: emulated accounts with proper warmup, mobile proxies, realistic engagement patterns spread over 20+ hours. The key is making it look like your followers are engaging, not random accounts, because X's algorithm weighs follower engagement way higher.
The 200 likes/RTs/comments pattern you're noticing is classic. They're probably running 40-80 accounts that follow the target first, then engage with posts. X sees engagement from followers = algo boost.
But here's what separates the working setups from the burned ones: behavioral fingerprinting. Real accounts don't just like posts. They switch between tabs, pause randomly, vary session times, have realistic active hours. Most people skip this and wonder why their accounts get flagged.
Mobile emulation beats browser automation every time. And if you're seeing consistent results from these accounts, they're definitely not using scheduling tools or desktop posting
The second option are private pods, there are composed of real people and they engage with each other when a member of the group post, they do everything manually, it works great but there are 2 main issues :
1) It's hard to find a good private pod
2) It's even harder to find a post with accounts that are within the same niche as you, cause if you post content about a specific topic but most of the accounts that engage from the pod.are from an opposite niche you'll just train the algo to show your content to the wrong people.