EDIT, 29/09/20: I shall now clarify that the list on this post is no longer kept updated and that I've made another small amendment to the thread title!

Edit, 12/04/19: Given the turn that this thread has taken over the past year, I thought that I would amend its title to something more appropriate and to give Annie her due credit in the title! There's no need for me to add links in to where Annie's work starts as it starts from the post following this one!

This is not to say that other postings will not be welcome, I just thought it was time for a change of title here.  

I will, however, take the opportunity to keep this post updated with the current list of Pre-Grouping TS2019 (Dovetail) Locomotive and Rolling stock addons. I won't include freeware ones as they have been massively outclassed since I started this. '*' indicates a forthcoming release which is due shortly.

WARNING - This post is very long! 

Digital Traction

• MR Fowler 4F Class 0-6-0 (Part of a Twin Pack with an LMS 'Austin 7' 0-8-0 - http://digitaltraction.co.uk/mainsite/products/lms-twin-loco-pack-4f-and-7f/ )
• 
• MR Fowler (?) 3F Class 0-6-0 (http://digitaltraction.co.uk/mainsite/products/3f-tender-loco-pack/ )
• 
• LSWR M7 Class 0-4-4T (http://digitaltraction.co.uk/mainsite/products/dt-lswrsr-m7-0-4-4t-loco/ )
• 
• ex-GER S69 Class 4-6-0 (Reboilered condition - http://digitaltraction.co.uk/mainsite/products/dt-lner-b12-loco/)
• 
• MR-Type Fowler Compound 4-4-0 (LMS-Build - http:///mainsite/products/lms-compound-pack/)
• 
• GNR Gresley N2 Class 0-6-2T (Contains LNER Quad-Arts - http://digitaltraction.co.uk/mainsite/products/great-northern-n2-tank-loco/)
• 
• GWR Churchward 4300 Class 2-6-0 (http://digitaltraction.co.uk/mainsite/products/gwr-43xx-loco/)
• 
• LSWR Adams 0415 Class 4-4-2T (http://digitaltraction.co.uk/mainsite/products/lswr-adams-radial-loco/)
• 
• SECR Wainwright H Class 0-4-4T (http://digitaltraction.co.uk/mainsite/products/dt-secr-h-loco/)
• 
• LSWR Non-Corridor Coach Pack (http://digitaltraction.co.uk/mainsite/products/lswr-carriage-pack/)
• 

Caledonia Works

• GER Hill L77 Class 0-6-2T (http://digitaltraction.co.uk/mainsite/products/ger-l77-loco/)
• 
• LNWR Webb 'Coal Tank' 0-6-2T (http://digitaltraction.co.uk/mainsite/products/lnwr-coal-tank-locomotive/)
• 
• GNR Stirling A Class 4-2-2 (http://digitaltraction.co.uk/mainsite/products/great-northern-railway-stirling-single-locomotive/)
• 
• NER Worsdell O Class 0-4-4T (http:///mainsite/products/cw-ner-g5-tank-loco/)
• 
• NER Bouch 1001 Class 0-6-0 (Includes Pre-1900 NER Wagons and Brake Van - http://digitaltraction.co.uk/mainsite/products/ner-1001-longboiler-loco/)
• 
• LBSCR Billinton/Marsh E4 Class 0-6-2T (http://digitaltraction.co.uk/mainsite/products/vl-lbsc-e4-loco/)
• 
• CR Mcintosh 498 Class 0-6-0T (http://digitaltraction.co.uk/mainsite/products/cw-cr-498-loco/
• 
• CR Mcintosh 782 Class 0-6-0T (http://digitaltraction.co.uk/mainsite/products/caledonian-railway-782-class/)
• 
• CR Drummond 264/611 Class 0-4-0ST (http://digitaltraction.co.uk/mainsite/products/caledonian-railway-264-611-class-pug/)
• 
• CR Drummond No.123 4-2-2 (Contains CR Corridor Coaches - http://digitaltraction.co.uk/mainsite/products/dt-caledonian-railway-123-loco-pack/)
• 
• CR Drummond 294 Class 0-6-0 (http://digitaltraction.co.uk/mainsite/products/cr-294-class-jumbo-loco-pack/)
• 
• CR Pickersgill 944 Class 4-6-2T (http://digitaltraction.co.uk/mainsite/products/caledonian-railway-944-class/)
• 
• CR Mcintosh 600 Class 0-8-0 (Contains CR Bogie Coal Wagons and 6w Brake Van - http://digitaltraction.co.uk/mainsite/products/caledonian-railway-600-class/)
• 
• CR Mcintosh 812 Class 0-6-0 (http://digitaltraction.co.uk/mainsite/products/caledonian-railway-812-class/)
• 
• CR Mcintosh 903 'Cardean' Class 4-6-0 (http://digitaltraction.co.uk/mainsite/products/cr-903-class-cardean/)
• 
• CR Mcintosh 721 'Dunalastair I' Class 4-4-0 (http://digitaltraction.co.uk/mainsite/products/cr-721-class-dunalastair-i/)
• 
• CR Wagon Pack 1 (http://digitaltraction.co.uk/mainsite/products/dt-caledonian-wagon-pack-1/
• 
• GCR Robinson 8K Class 2-8-0*
• CR Mcintosh 439 Class 0-4-4T*
• NER Worsdell R Class 4-4-0*
• NER Worsdell P3 Class 0-6-0*
• SECR Wainwright C Class 0-6-0*
• L&YR Aspinall 5 Class 2-4-2T*

Matrix Trains

• CR 6-Wheeled Coach Pack (http://digitaltraction.co.uk/mainsite/products/mt-cr-6-wheeler-coaches/)
• 
• CR 'Grampian' 12-Wheeled Coach Pack (https://www.steamsoundssupreme.com/mt-grampian-carriage-set-1.html)
• 
• CR 48ft Non-Corridor Coach Pack (https://store.steampowered.com/app/678182/TS_Marketplace_Caledonian_Railway_45ft_NonCorridor__Caledonian_Railway_AddOn)
• 
• GNR/NER Non-Corridor Coach Pack (https://store.steampowered.com/app/643690/TS_Marketplace_NERGNR_NonCorridor_LNER_Pack/)
• 
• GWR Churchward 57ft Toplight Coach Pack (https://store.steampowered.com/app/513119/TS_Marketplace_GWR_Churchward_Panelled_Toplights_Pack_01_AddOn/)
• 
• GWR Churchward 70ft Toplight Coach Pack (https://store.steampowered.com/app/623250/TS_Marketplace_GWR_Churchward_Panelled_Toplights_Pack_02_AddOn/)
• 
• SECR 60ft 'Birdcage' Coach Pack (https://store.steampowered.com/app/623264/TS_Marketplace_SECR_60FT_Birdcage_SECR_Crimson_Lake_AddOn/)
• 
• GCR 'Barnum' Coach Pack (https://store.steampowered.com/app/513090/TS_Marketplace_Barnum_Coaches_Pack_01_AddOn/)
• 
• GWR 'Concertina' Coach Pack*
• 

Victory Works

• GWR Churchward 4500 Class 2-6-2T (https://store.steampowered.com/app/277753/Train_Simulator_GWR_Small_Prairies_Loco_AddOn/)
• 
• GWR Churchward 4200 Class 2-8-0 (https://www.steamsoundssupreme.com/gwr-42005205-2-8-0t.html)
• 
• GWR Churchward 'Saint' Class 4-6-0 (https://store.steampowered.com/app/376963/Train_Simulator_GWR_Saint_Class__Travelling_Post_Office_Loco_AddOn)
• 
• GWR Steam Railmotor (https://store.steampowered.com/app/258650/Train_Simulator_GWR_Steam_Railmotor_Loco_AddOn/)
• 
• LBSCR Stroudley/Marsh A1/A1x Class 0-6-0T (https://www.steamsoundssupreme.com/stroudley-a1a1x-terrier-mainpack.html)
• 
• NER Raven T2 Class 0-8-0 (https://store.steampowered.com/app/642806/Train_Simulator_LNER_Raven_Q6_Steam_Loco_AddOn/)
• 
• NER Worsdell C Class 0-6-0*
• 

Rustic Engineman's Loco & Carriage Workshop

• GER Worsdell Y14 Class 0-6-0 (https://www.steamsoundssupreme.com/y14-j15-pack.html)
• 
• LBSCR Billinton E2 Class 0-6-0T (https://www.steamsoundssupreme.com/page_lbscre2pack01.html)
• 
• Entire stock of the Talyllyn Railway*

Meshtools

• LNWR Beames Class G2 0-8-0 (https://store.steampowered.com/app/448186/Train_Simulator_LNWR_G2_Super_D_Steam_Loco_AddOn/)
• 
• L&YR Aspinall  Class A 0-6-0*

Donkey Works

• SD&JR 6-Wheel Coach, SD&JR Van, LSWR 'Road Van' (https://www.steamsoundssupreme.com/page_wswp01.html)

Just Trains

• GWR 3700 'City' Class 4-4-0 (Contains GWR Clerestory Coaches - http://www.justtrains.net/product/class-3700-with-city-of-truro-download)
• 

Steam Loco Collection

• LSWR Drummond/Urie T9 Class 4-4-0 (https://steamlococollection.co.uk/lswr-drummond-t9-add-on/)
• 
• SECR Wainwright H Class 0-4-4T*
• 

And I think that rounds it all up!