If I want something with higher yield than Treasuries or CDs but less volatility than stocks what are my options?

Insert Generic Caveat that I know no one knows what the market will do. But supposing I wanted to keep some portion of assets in such a fund to later move to S&P 500 index funds during a large dip. What options are there? Corporate bonds? Preferred stocks? …?

Any help with what categories of products to investigate would be appreciated. 🫡

Edit: to be clear I’m looking for categories to research myself not specific products within those categories

Thanks for all the ideas!

# Edit 2: to be clear I’m looking for categories to research myself not specific products within those categories