The inflatable ones are more portable in terms of size than the mats or the self-inflating ones but all 3 have their disadvantages.

Foam isn’t all the comfortable and they are bulky and hard to deal with in brush. Some are decent insulation, but most aren’t great. Most are the cheapest.

Self-inflating is more comfortable and insulating than foam, but they are often bulky and can be punctured. Some of them can still be used if they get a puncture and are just shitty foam, but that isn’t the norm. The more modern ones can pack down small, but still bigger than inflatables. You can adjust the pressure for comfort, but it isn’t super easy to adjust.

Inflatable packs down tiny and you can adjust pressure to adjust for comfort quickly, puncture is obviously a huge concern. They insulate really well and some are very insulating. These tend to be in the most expensive.