I tried https://yetanotherbrowser.com/ yesterday and I really like it, have you given it a try? Overnight they had a release that enables a new blank window which is probably similar to Little Arc, but I didn't use that feature much.
Thanks!
Reading the changelog, it looks like that still requires me moving to the browser first, then opening a new window. Little Arc allowed you to open a temp one anywhere, outside Arc, so you could stay on whatever screen you were working on, and quickly checking an…