Best in slot (BiS) items often depends on the boss you are up against. As a result it might be a good idea to keep different gear at hand for certain bosses. The list below contains the BiS items for rogues in PvE, through the different content releases in WoW Classic. Not all items may be perfect for your build, but it should serve as a reference.

Phase 1 Pre-Raid

Slot Item
Head Mask of the Unforgiven
Neck Mark of Fordring
Shoulder Truestrike Shoulders
Back Cape of the Black Baron
Chest Cadaverous Armor
Wrist Deepfury Bracers
Hands Devilsaur Gauntles
Waist Cloudrunner Girdle
Legs Devilsaur Leggings
Feet Swiftwalker Boots
Ring Painweaver Band
Ring Blackstone Ring
Trinket Blackhand's Breadth
Trinket Hand of Justice
Main-Hand Dal'Rend's Sacred Charge / Heartseeker / Felstriker
Off-Hand Dal'Rend's Tribal Guardian / Alcor's Sunrazor
Ranged Blackcrow

Phase 2 Pre-Raid

Slot Item
Head Mask of the Unforgiven
Neck Mark of Fordring
Shoulder Truestrike Shoulders
Back Cape of the Black Baron
Chest Cadaverous Armor
Wrist Bracers of the Eclipse
Hands Devilsaur Gauntles
Waist Cloudrunner Girdle / Mugger's Belt
Legs Devilsaur Leggings
Feet Swiftwalker Boots
Ring Tarnished Elven Ring
Ring Tarnished Elven Ring
Trinket Blackhand's Breadth
Trinket Hand of Justice
Main-Hand Dal'Rend's Sacred Charge / Heartseeker / Felstriker
Off-Hand Dal'Rend's Tribal Guardian / Alcor's Sunrazor
Ranged Satyr's Bow

Phase 2

Slot Item
Head Bloodfang Hood
Neck Onyxia Tooth Pendant
Shoulder Nightslayer Shoulder Pads
Back Cape of the Black Baron / Puissant Cape
Chest Nightslayer Chestpiece
Wrist Bracers of the Eclipse
Hands Nightslayer Gloves / Aged Core Leather Gloves
Waist Nightslayer Belt
Legs Bloodfang Pants
Feet Nightslayer Boots
Ring Band of accuria
Ring Tarnished Elven Ring
Trinket Blackhand's Breadth
Trinket Hand of Justice
Main-Hand Vis'kag the Bloodletter / Perdition's Blade
Off-Hand Brutality Blade / Core Hound Tooth
Ranged Striker's Mark

Phase 3

Slot Item
Head Bloodfang Hood
Neck Prestor's Talisman of Connivery
Shoulder Bloodfang Spaulders / Nightslayer Shoulder Pads
Back Cloak of Firemaw
Chest Bloodfang Chestpiece
Wrist Bloodfang Bracers
Hands Bloodfang Gloves / Aged Core Leather Gloves
Waist Bloodfang Belt
Legs Bloodfang Pants
Feet Bloodfang Boots / Boots of the Shadow Flame
Ring Band of accuria
Ring Master Dragonslayer's Ring
Trinket Drake Fang Talisman
Trinket Hand of Justice
Main-Hand Chromatically Tempered Sword / Perdition's Blade
Off-Hand Maladath, Runed Blade of the Black Flight / Core Hound Tooth
Ranged Striker's Mark

Phase 4

Slot Item
Head Bloodfang Hood
Neck Prestor's Talisman of Connivery
Shoulder Bloodfang Spaulders / Nightslayer Shoulder Pads
Back Cloak of Firemaw
Chest Bloodfang Chestpiece
Wrist Bloodfang Bracers
Hands Bloodfang Gloves / Aged Core Leather Gloves
Waist Bloodfang Belt
Legs Bloodfang Pants
Feet Bloodfang Boots / Boots of the Shadow Flame
Ring Band of accuria
Ring Master Dragonslayer's Ring
Trinket Drake Fang Talisman
Trinket Hand of Justice
Main-Hand Chromatically Tempered Sword / Perdition's Blade
Off-Hand Maladath, Runed Blade of the Black Flight / Core Hound Tooth
Ranged Striker's Mark

Phase 5

Slot Item
Head Deathdealer's Helm
Neck Prestor's Talisman of Connivery
Shoulder Deathdealer's Spaulders
Back Cloak of Concentrated Hatred
Chest Deathdealer's Vest
Wrist Qiraji Execution Bracers
Hands Gloves of Enforcement / Aged Core Leather Gloves
Waist Belt of Never-ending Agony
Legs Deathdealer's Leggings
Feet Deathdealer's Boots
Ring Band of accuria
Ring Master Dragonslayer's Ring
Trinket Drake Fang Talisman with Badge of the Swarmguard
Trinket Jom Gabbar with Earthstrike
Main-Hand Ancient Qiraji Ripper / Death's Sting
Off-Hand Maladath, Runed Blade of the Black Flight / Blessed Qiraji Pugio
Ranged Striker's Mark

Phase 6

Slot Item
Head Bonescythe Helmet
Neck Prestor's Talisman of Connivery
Shoulder Bonescythe Pauldrons
Back Shroud of Dominion
Chest Bonescythe Breastplate
Wrist Bonescythe Bracers
Hands Bonescythe Gauntlets
Waist Belt of Never-ending Agony
Legs Bonescythe Legplates
Feet Bonescythe Sabatons
Ring Bonescythe Ring
Ring Band of Unnatural Forces
Trinket Kiss of the Spider with Badge of the Swarmguard
Trinket Slayer's Crest with Earthstrike
Main-Hand Gressil, Dawn of Ruin / Kingsfall
Off-Hand The Hungering Cold / Death's Sting
Ranged Nerubian Slavemaker

Source