Searching for "Researcher's Diary" returned 9 results:
Key item (The Hive), Resident Evil Outbreak
File (The Hive), Resident Evil Outbreak
File, Resident Evil Village
File (Laboratory), Resident Evil 2 Remake
File, Resident Evil Zero
File, Resident Evil
File, Resident Evil Remake
File (Decisions, Decisions), Resident Evil Outbreak
File (Episode 4 File), Resident Evil Revelations 2