You will need to reset the hue bulbs first, then you should be able to pair them to the ST hub. Read the two threads in The following post… one from myself and tHe better one that follows by @JDRoberts
Please follow the links that @jkp already gave you. There are two different ways to reset without a hue bridge. Whether either or both will work for you depend on a number of individual factors, including the Zigbee channel that your hub was previously set to, but there are alternatives.
That said, if you do have a hue bridge, that is probably all you need.
Ikea did it differently, with both pros and cons versus the Phillips hue method.
The IKEA bulbs are good bulbs and work well with smartthings, so definitely you can use those if you prefer them. But the Hue Bridge brings in a number of additional features not available on IKEA, such as the ability to set the power restore behavior for each individual bulb. Choice is good.
5 years ago you posted about using Raspbee to reset an orphaned Hue bulb to factory no matter what channel it is on. Later more solutions got updated. My question is that is this touchlink method using zigbee2mqtt hardware the same? In my area this is the cheapest hardware I can get if it does the same thing as Raspbee, light link remote and living colors remote in terms of resetting a Hue bulb regardless of Zigbee channels.