Mission accomplished! Here’s what got me there:
- File List Export
- MacSparky’s iPhone Field Guide
- Yoink for iOS (I already have it and use it on the Mac and thought it might be useful)
- Affinity Photo
- Affinity Designer
- 1Blocker X (I’ve been using the legacy version of 1Blocker on iOS and Mac so far)
- Reeder 3 for Mac (again, I use it heavily on iOS)
- Blackbar
- MacSparky’s 60 Mac Tips, Vol. 1 (since it was updated in 2017 I thought it might still be relevant. I already have Vol. 2.)
- Toothfairy
The big ticket items were Affinity Photo and Designer. They look like solid products and I think they will be useful for my work. Thank you all for your suggestions 
Now the mammoth task of changing regions on my Apple ID account (from US to India) awaits me. I hope it goes smoothly 