Depending on how scared they are (how often/long they shield), I'm a fan of spaced back air into a turnaround jab or ftilt into wait/bomb/jab/wavedash behind them into dsmash/dash back pivot ftilt/grab/nair if they're prone to jumping.
Any of those options also work without the bair, but it's always satisfying to get a spaced bair on that shield. Particularly fond of jab shield/dashback pivot fsmash if they're prone to shield grabbing. Works remarkably well v most characters. Just sitting there outside grab range can also give you a decent shot of reacting out of their options, and bomb has a lot of mixup utility. If you instant land it, you can usually reactively follow a roll into a dash attack or crouched down move, if you go up with the bomb, you can float down into a nair or dair and choose how long you sit above them (although that's dependent on their mu knowledge. They can just roll out of the bomb if you're above them and they're decently versed in the microsituation)
Yeah word vomit aside you've got tons of mixups. Just be sure not to space so close you can be grabbed or attacked OOS, worst case scenario if you play it right they escape and you go back to neutral.