https://github.com/LineageOS/lineage_wiki/blob/master/_data/devices/s5neolte.yml
s5neolte is the right device codename,
Heimdall : https://eu.dl.twrp.me/s5neolte/twrp-3.3.1-0-s5neolte.img.html
Odin : https://eu.dl.twrp.me/s5neolte/twrp-3.3.1-0-s5neolte.img.tar.html
have you tried the first build from @Unknown or another tested as working in the thread
[UNOFFICIAL BUILD] Samsung Galaxy S5 Neo (s5neolte)