动态广告形式大致分为哪几类？请选择三个答案。

LinkedIn dynamic ad formats automatically personalize ad content for each viewer, increasing relevance and engagement. The three main types are: Custom Ads, which use data like profile information to tailor content; Follower Ads, which encourage users to follow your company page; and Job Ads, which promote relevant job openings to qualified candidates. Engagement Ads and Lead Gen Ads are distinct ad objectives or formats, but not categories of dynamic ads themselves.