Thunder maybe?

I can't say enough good things about Summit.

Not open source, but it is free. Dev is great. Very responsive and has done many same-week bug fixes for me and added features I asked for just as quickly. I think it's one of the best looking apps and IMO it's peerless as far as building nice looking, complicated structure posts. I post long articles with multiple pics and quotes and links, and Summit is so far ahead of all the other apps I've used it's not funny. Great UI and function customization as well.

I use raccoon and am very happy with it

In voyager just disable or change the swipe actions

I find myself in the same situation. The recommendations here are all great and it depends on your preferences. I settled on Raccoon for now, which has very active development. I would love someone with the know-how to fork Eternity and add a few missing features to bring it up to date, but that's pretty unlikely I think.

If you're on Android (mentioning Boy, so probably not) the official Lemmy app, Jerboa, is great.

Any recommendations for iOS? Always willing to try something new. Currently daily driving !lemmynade@lemm.ee

EDIT:

I’ve used Thunder but found it a little buggy at times, although the dev was pretty active. I was also using it during the testing and pre-release so bugs were very much expected