____UI Improvements: 

Appeal, Loyalty and Prestige (Diplo VP) Font Icons - Leugi
Better Builder Charges Tracking - wltk
Better Deal Window - gliding
Better Espionage Screen - astor
Better Loading Screen (UI) - infixo
Better Report Screen (UI) - infixo
Better Trade Screen - astor
Civic and Tech Stop Reminder - Annika
Detailed Map Tacks - wltk
Detailed Wonder Reminder Enhanced - 榊野木乃实
Enhanced Mod Manager - FinalFreak16
Extended Policy Cards - Aristos
Great Person Recruited Notification - Yokuyin
More Lenses - astor
NotificationClear - 336tarot
Quick Deals - wltk
Quick Deals - View All Strategic Resources - jboss
Quick Start (Linux, Mac, Windows) - Odin Vex
Remove Challenge of the Month - Flactine
Remove pop-ups - tech/civic & historical moments - Skalozubio
Reveal Secret Society Promotions - Fuzzle
Right Click Close Leader - PoundedChicken
Right Click Close Production - Kornstalx
Rihla - Global Rankings - SeelingCat
Select Natural Wonders++ - sukritact
Sukritact's Civ Selection Screen - sukritact
Sukritact's More City and Unit Info Stack - sukritact
Sukritact's Simple UI Adjustments - sukritact
TCS Pedialite - thecrazyscotsman
Great Works Viewer - Glindor

////////

____Gameplay Mods:

Real Great People - infixo
Great Philosophers - Bearus Aurelius
Civilization Conquer Mode - muyyi
Green Cities - Districts in Forest - JNR
Districts don't Remove Features(Including Natural Wonders) - 黑光_G门
Coastal/Waterfront Specialty Districts - HktkNban
总督立刻上任\Governor immediate assign -  阿列克谢耶维奇
使徒可选择任意升级\Apostle Choose Any Promotions - 阿列克谢耶维奇
【Immigration】Move your population - WindFly
Zegangani's: Real Allies - Zegangani
Wildlife - Shirotora Kenshin
Wetlands - JNR
Walled Quarter - blkbutterfly
Unique Reworked: Qhapaq Ñan (Inca) - JNR
Unique District: Eanna (Sumer) - JNR
Unearthed: Artifacts and Relics Expansion - Deliverator23
Truly Abundant Resources - p0kiehl
Trainable Religious Units - ChessPro2007
Trade Route Smaller Minimal Duration - D
Terrace Farms Boost Feudalism - Sailor Cat
Take Over Production Queue - Jewberry
TCS Free Walls for City-States - thecrazyscotsman
Sukritact's Resources - sukritact
Sukritact's Oceans - sukritact
Sukritact's Embarkation++ - sukritact
Strudeler's Civilization VI Deluxe - Strudeler of the Tart Society
Stone rocks! - JNR
Start by Wonders - Ophidy
Sailor Cat's Upgrades Keep Unique Abilities - Sailor Cat
Rush Repair Projects - Zegangani
Resourceful 2 - Amatheria
Repeat Governor - yamada
Removable Resources and Features: Fixificated - Daedalus
Real Rivers for Random Maps - Maple_Leaves 枫叶
Prehistoric Wildlife - Deliverator23
Pen's Record Era Score - Pen
Pen's Wonder Enhanced - Pen
Passable Ice - Sailor Cat
Nyguita's More Great People - Nyguita
No Obsolete Unique Units - Sailor Cat
Natural Wonder Mountain Adjacency - Fuzzle
Nationalism Rocks Empires - Boa of the Boaians (ᜊᜓᜀ)
Movable Districts - wltk
Luxury Resource Variety - p0kiehl
Latin American Resources - Leugi
Keep Unique Buildings - Fuzzle
JUST Canals On Hills - Onii-chan
Governors Nationwide - Dazz Aephiex
Goody Huts No Faith - +ChAoS
Gold Deflation - p0kiehl
Gift It To Me - Fampat
Flood Barriers Cost Scaling Adjustment - JNR
Fisheries++ - p0kiehl
Faster Secret Society Discovery - Fuzzle
Faster Border Growth - Magma Dragoon
Fast Forward AI Turns - Zugaikotsu
Extended Eras - p0kiehl
Earlier Canals - Grêy
Desert Woods and Marshes - Sailor Cat
Deforestation: More Gradual and Severe - JNR
Decommission Power Plants - JNR
Coastline - Rdner
Clean Nuclear Power - JNR
Carbon Recapture Unlocked by Tech - JNR
Capture Unique Improvements - Sejick
CIVITAS Resources - p0kiehl
Auto build roads with units: Fixificated - Daedalus
Ancient Paragons (Great People Pack) - JNR

___Visual Enhancements:

Auckland - Pōhutukawa Icon - Kiwifruit Salesbird
Better Civilization Colours - janboruta
Better Civilization Icons - janboruta
City Canal Rework - Rdner
City Sprawl Graphics - Hiraeth
Colorized Era Score - Plerion
Colorized Fog Of War - MiniRagnarok
Colorized Historic Moments - MiniRagnarok
Enhanced Camera - DahakaMVI
Environment Skin: Sid Meier's Civilization V
Free Rotation (GS Updated June 2020) - Chrysis
Hillier Hills (Colder Tundra Edition) - Deliverator23
Leugi's City Style Pack - Leugi
Tsunami Waves - p0kiehl
Unique District Icons - Leugi
Vibrant Waters (Prettier Water Textures) - p0kiehl
[GS] Leugi's City Styles Pack - Leugi

___Other Aesthetic Enhancements/Immersion(?):

Terra Mirabilis - chimp
Sid Meier's Civilization® V UI + Notifications Sounds - Steffalon
Rosetta - Dynamic City Names - SeelingCat
Random City Names - p0kiehl
Our Sovereign Nation: Quotes - DesertMoonGW
Nomina - Dynamic Civ and Leader Names - SeelingCat
Mappa Mundi - thecrazyscotsman
Left-wing Music - Ophidy
Immersive Dialogue - CMDR Sheploo
Epithet - Dynamic Leader Titles - SeelingCat
Cohort - Dynamic Unit Names - SeelingCat

I really really like the overhaul that is Strudeler's CIV VI deluxe, and enjoy the Dynamic city/leader/unit names from SeelingCat. I run civ on a shite integrated graphics laptop and have to download the mods manually to make sure updates don't fuck me over b/c I enjoy playing weeks-long ultramarathon games solo with the Extended Eras Mod. I can list some added civs, wonders, nat wonders, and secret societies too, but browse the workshop and find some creators you like, and they should be great.

Just realized that I made this list from an old list, here are a few other essentials:

Railroads by Traders
Mountain Tunnels at Steam Power
Top Panel Extension
Customization VI
Coexistence of Districts and Resources (With all resource can be harvest)
Actual Sparse Resources
Radial Measuring Tool
Nut9931's Hellraiser Difficulty MOD
Social Mechanics's Happiness Rework
What Did I Promise?
Notification Log
Great Rivers Regional Identities
More Beneficial Random Events
Phantagonist's Chinese Dynasty Uniques
Annex City-States
Phantagonist's Chinese City Names
Phantagonist's City-States - Silk Road and Beyond
Second Unique Infrastructure
Sukritact's Urban Identities
Savannah
C&P: Domestic Trade Bonuses
C&P: Naval Trade Protection
Triple Natural Wonders
Workable 4th Ring
Kalendae - Calendar Flavor Mod
City states that prohibit expansion
Mixed Farms
Barbarians Actually Get No Free Techs
City Banner Refresh Fix
Religion++
More (or Less) Religions
YD's Better Civil Engineering
Guaranteed Oasis
Set individual variables [[NB I don't use this one yet but it looks promising]]
National Infrastructure Projects
No first messenger of city state
EPSTweak for Policies - No removal, no buffs
Mistake Era(Future Era Update) Ver 0.95
Ancient Era Diplomatic Policies
Enable Wonders On Mountains
Science/Culture Overflow Bug Fix
Sort Tech and Civic Unlocks
Terrain and Feature Adjacent Yields V 0.9
Phantagonist's Slavery and Emancipation
Phantagonist's Three Kingdoms Leader Pack
Tech Civic Progress Plus

From these, workable 4th ring is probably the biggest change, along with city states prohibit expansion. I have supplanted the desert woods with the savannah mod for better flavoring, and really like all phantagonist's mods, especially the china expansions. Top panel expansion is a great UI mod.

Overall it's lots of cheese but I think they're fun :) happy to answer any questions