Looks good. A couple of points/suggestions.
1. Some sort of print option?
2. You're missing a lot of soldier types (the aforementioned Captain for example), which unfortunately you're only going to be able to get details of with the various supplements (all 1e supplements are valid in 2e).
3. Some soldiers have different prices in 1e to 2e, so if you have a toggle for wizards you probably should have one for soldiers.
4. In 1e you had a wizard and 9 slots, one of which could (should!) be the Apprentice. In 2e you have the wizard, optional apprentice and 8 soldier slots - you can't take a 9th soldier by not taking an Apprentice.
5. Add the bases? As these can change casting numbers (or add room for another soldier).
6. Add the following to the resource page:
https://www.josephamccullough.com/frostgrave/ It's the author's own website.