Older Sony Xperia phones support LineageOS and have a headphone jack. Normally it isn’t until their 2-warranty is up that a LineageOS build is mainlined (likely because they aren’t high volume & are expensive). I got a III recently to running LineageOS for microG (but the proprietary camera app is missing).
Be aware that the cheaper ASUS Zenfones have a headphone jack, but are nearing a year since their bootloader unlock servers “went down for maintenance”. They’ll likely never come back.