Depending on how long the list is it may be worth a bit of quick massaging with Search and Replace to insert some characters to use as delimiters to help the program convert to a table with less errors.
If you have excel as well, it may be worth pasting into that and then using convert to columns where you can use either fixed length fields or delimiters. Again, you can do this in 2 or 3 stages so as to isolate one column by delimiters and then the remainder split by field length etc.
It all depends on how many items there are in the list how much trouble you can take massaging before it becomes just as quick to enter it bit by bit

I use Axon Idea Processor all the time.
Mindmapping is just part of what it does, and if you only want to use it for that you might not find the presentation aspect as polished as you would like.
My main use for it is creating notes for speaking - collecting points and subpoints, moving them around on screen until happy with the layout, using a hierarchy of colour Red, Blue, Green, Brown, Black to indicate levels, and usually printing out one A4 sheet landscape from which to speak for 20-25 minutes.
On a regular basis I open a particular Access table, excel spreadsheet and Word template. One click on an icon I created in Axon opens them all.
Weighted decision trees, critical path analysis and some simulation models are other things you can play with.
You can export to html. I'm hoping for better export to MS Office programs in the future ... Because it does so many things it may take a bit of time trying it out to get a feel for its potential, but I reckon it is worth investigating (no association other than a happy user for the last 10 years or so)
The author Chan Bok is very responsive to any problems you may experience.

David