If you're gonna add Amityville I'd recommend watching this video
Amityville II can't be a prequel due to a contradictory timeline. There's name changes and present day timeline references.
Amityville: Evil Never Dies firmly connects to the 1-8 film series and Legacy. The house is destroyed in 3-D but around in 4, so I guess it was restored by the evil presence... though Evil Never Dies suggests that it was destroyed thus implying it still is, so I don't know. In Chucky, the house is still there.
Original Timeline
1975 - The Amityville Horror (1979)
1982 - Amityville II: The Possession
1983 - Amityville 3-D
1989 - Amityville 4: The Evil Escapes
1989 - The Amityville Curse
1992 - Amityville: It's About Time
1993 - Amityville: A New Generation
1996 - Amityville Dollhouse
2014 - The Amityville Legacy
2017 - Amityville: Evil Never Dies
2020 - Amityville in the Hood
2023 - Chucky 3x03, "Jennifer's Body" (????)
Reboot
1932 - The Amityville Dawn
1975 - The Amityville Horror (2005)
Haunting
2008 - The Amityville Haunting
Asylum
2013 - The Amityville Asylum
Death House
2015 - Amityville Death House
2017 - Amityville: Exorcism
2020 - Amityville Island
Sickle
2010 - Sickle
Dollhouse
2015 - Amityville Playhouse
Vanishing Point
2016 - Amityville: Vanishing Point
Terror
2015 - The Amityville Terror
No Escape
2016 - Amityville: No Escape
Against the Night
2017 - Against the Night
The Awakening/Real World
2015 - Amityville: The Awakening
Murders
1974 - The Amityville Murders
Mt. Misery Road
2017 - Amityville: Mt. Misery Road
Academy
2020 - Witches of Amityville Academy
Harvest
2020 - The Amityville Harvest
2021 - Amityville Moon
Vibrator
2020 - Amityville Vibrator
Poltergeist
2020 - An Amityville Poltergeist
Cop
2021 - Amityville Cop
Cult
2021 - Amityville Cult
Vampire
2019 - Amityville Vampire
Scarecrow
2022 - Amityville Scarecrow
Uprising
2020 - Amityville Uprising
(A bunch of others)