The Musketeer Late Romans are beautiful figures and have separate – oval and rimless – shields.
In size they match perfectly with Gripping Beast ( with attached oval and rimmed- shields. You could also use the Gripping Beast Arthurian infantry with attached- oval, rimless- shields.
Black Tree makes some nice unarmoured Late Romans with separate – rimless- shield. The figures are very nice but the Musketeer oval shields are better. They are available separately to replace the Black Tree ones. Again the match almost perfectly with GB and Musketeer.
West Wind has a small series of Late Roman infantry with separate- oval, rimless shields. All have separate heads too
- standard is bareheaded- but WestWind makes really nice heads with helmets- some slightly dillapidated and perfect for lower grade militia- hats etc. Take a look at their Welsh and Picts too because they are very usefull as Numeri.
Again I would suggest you replace the oval shields with Musketeer ones. This will also make your life a lot simpler if you want to use those great LBM decals. Be prepared to clean up some flash with these figures,especially around the hands, but they are very much worth it.
The new Dark age plastic figures from Gripping Beast.
Combine these with the West Wind heads and again, if you want the Musketeer oval shields, and you've got a very inexpensive Late Roman infantry army. All the shield in the box are round but ther are specific Late Roman decals available from LBM. IMHO it looks great if you mix round and oval shields especially with the same design.
Artizan has a few pack of Late Roman/Arthurian infantry. About the same size as the GB/Musketeer/WestWind/Black Tree ones.
Same comment on the oval shields.
Two of the Crusader pack from their Scots range (dsc01 and 2) can be easily converted to Late Roman lower class infantry. Some very imaginative poses and separate shields.
Still I would replace the shields at least partially with Musketeer ones.
The Foundry Arthurians/Late Romans are great but a bit smaller than all the above mentioned. Great personal dislike are the moulded- on clavii on the tunics.
They mix well with the Newline Design miniatures which are again IMHO superior in accurarcy to the Foundry ones.