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Dragon Quest IV: Michibikareshi Monotachi (Nintendo DS)
Video source: https://www.youtube.com/watch?v=B5Rsuu3iK0U
Patch:
For Japan ROM: https://github.com/concreted/dqiv-nds-en-script-patcher
For USA ROM: https://www.romhacking.net/translations/6740/

B.L.U.E.: Legend of Water (PlayStation)
Video source: https://www.youtube.com/watch?v=hRHtLn5X0iM
Patch: https://www.patreon.com/posts/75941631

Keitai Denjuu Telefang: Power Version (Game Boy)
Video source: Me.
Patch: https://www.romhacking.net/translations/2746/

Phantasy Star (Sega Master System)
Video source: https://www.youtube.com/watch?v=a9oODaqCrcI
Patch: https://www.romhacking.net/translations/1069/

Venus Senki (Famicom)
Video source: https://www.youtube.com/watch?v=X_4lSn71vAQ
Patch: https://www.romhacking.net/translations/6750/

Last Armageddon (Famicom)
Video source: https://www.youtube.com/watch?v=lRRlGd5iX4U
Patch: https://www.romhacking.net/translations/6725/

Mashin Eiyuuden Wataru (PC Engine)
Video source: Me.
Patch: https://www.romhacking.net/translations/6762/

ChoroQ Wonderful! (PlayStation)
Video source: https://www.youtube.com/watch?v=qHoQiuitCJM
https://www.youtube.com/watch?v=OIUYVaX2XZw
Patch: https://www.romhacking.net/translations/6764/

Az ~Azumanga RPG~ (Windows)
Video source:
Patch: https://github.com/Eight-Mansions/AzumangaRPG

Densha de GO! Final (Windows)
Video source: https://www.youtube.com/watch?v=ivCuasauGrI
Patch: https://sites.google.com/view/ddgcrew/games/densha-de-go-final?pli=1

Gai Flame (PC Engine)
Video source: https://www.youtube.com/watch?v=Vv0CEGS0L60
Patch: https://www.romhacking.net/translations/6770/

If you're looking for the pre-patched files, CDRomance has most of them.