Looking at your chain / teeth, that’s a totally normal profile for the first file a new chain. Every chain using the file guide looks like that. Once you’ve filed it a few times you’ll see the shape of the file will fit in just fine (just like your later pictures you shared). The inconsistency on why some of your teeth have a sharper edge than others is because you’re not holding your file flat across the tooth evenly.
It looks like it’s a very steep angle because you’re only filing the top of the tooth - the first time you file it will literally touch the top of the tooth like it has for yours, the more you file the more you’ll contact the tooth, then you remove the gullet and continue. There is nothing wrong here at all. I had the same concern originally when I started using the guide but it’s actually the correct 60 degree angle you have there which you’ll see if you measure it (just like I did when I had this same concern).
Stick with the current guide, file it like you are, do depth gauges and you’ll quickly see nothing is wrong.
New chain first filing with file in place:
View attachment 1179096
Result after first file (obtuse appearance but still 60 degrees)
View attachment 1179095
Well used chain with multiple filings - file in place:
View attachment 1179092
Result of well used chain after multiple filings ( Less obtuse appearance but still 60 degrees)
View attachment 1179094
Edit:
Lastly, here is one super imposed on the other. Notice the very upper most part of the cutting tooth - both are identical and both are 60 degrees yet they look like they’re totally different angles when you view the tooth in its entirety.
View attachment 1179108