I take it the only fish you now have in that list are the gourami. So whatever you get should fit well with these. Being slow and sedate fish, you don't want active or boisterous fish as this will unsettle the gourami, keep them stressed, and that means health issues. You also have to be careful that other fish are not likely to fin nip, because the long pectoral fins of a sedate fish are like the proverbial red flag to a bull.
So with that in mind, I would not have Golden Barb
. I assume this species is Puntius semifasciolatus
[common names are often misleading] and it is in our profiles [you know about our fish profiles?] and you can click the shaded name to see the profile data. There it recommends 8 in a group, and as this fish can reach 3 inches it needs space, at least a 4-foot tank. It is also a very active swimmer. So I would look to more suitable fish.
All barbs (and danio too) are active, so they are not particularly good companions for sedate fish. Rasbora are much better. Have a look at the several rasbora species in our profiles--you can do a search using "rasbora" there and it will list all of them.
The loach may likely be Pangio oblonga, since the Loach site gives cinnamon loach and java loach as two of several common names. If it is, here is some reliable info on this species; provided its rather special needs are met (a sand substrate, small group, etc as herein) it would work. Pangio oblonga – Black Kuhli Loach — Seriously Fish
That site also suggest rasbora as good tankmates, so that works double.