I've grown my LinkedIn brand from 1k to 21k in 4 months, and I'm sharing below my playbook for how I did it using lead magnets.
This is the exact process and approach I use for all my posts, which usually get 500-1000 comments (all those comments are 1:1 for followers). Yesterdays lead mag post is less than 36 hours old and already just shy of 1000 comments (see screenshot)
Me:
Good luck with the lead magnets!