@DC7IA I used to exclusively buy small phones until I gave that up with the last one. I still miss having a small phone sometimes.
Your best bet is probably the Xperia X Compact, if you want something really small (4,6").
@DC7IA Fairphone 3 (https://shop.fairphone.com/en/?___store=en) but doesn't have the LineageOS port yet afaik but will soon support /e/ , Shift5me (https://www.shiftphones.com/en/), or something 2nd hand/refurbished? (rebuy.de or other places). Fairphone 2 also supports lots of different os alternatives and fulfills all your conditions, and there's often somebody selling them in the forum: https://forum.fairphone.com/c/market/sell
other than that there's the Librem 5 (https://puri.sm/products/librem-5/) but that doesn't have many features yet
@DC7IA You always make it difficult for cope with your demands. Good 5'' mobile phones are currently rare. Your suggestion - the google pixel 3 - also has more than 5''.
@DC7IA Last time I faced a similar question, I wrote a small tool (https://gitlab.com/chrysn/new-phone-2018) to compare Lineage supported phones by features and size. The plot it outputs shows sizes of supported phones with a larger dot for my current (but out-of-support) 5.2" suzuran. It's a sad world for people who want phones and not phablets.
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