Aquatic clarity, blackwater aquatics, wetspot, tangled up in cichlids, cichlids of the americas, Dave's rare fish, and aquabid are all good places to look for online shopping.
Currently noone has nanolutea, thought the first ones to get them in may be COTA or wetspot, as cota has a colony of wild caught individuals, and wetspot usually gets tank strain ones in pretty frequently.
Macrostoma and otapa helleri you will have luck with on aquabid.
Apistos, laetacara and tetras you will also want to look on wetspot for.
As for t. pasionis, tuic had them pretty recently but I am not sure when he's getting them back in.
Also, nanolutea is currently in amatitlania, archocentrus was reorganized awhile ago and now only consists of centrarchus. Amatitlania consists of nigrofasciata, kanna, septemfasciata, myrnae, nanolutea, altoflava, and sajica, while cryptoheros consists of cutteri, spilurus and chetumalensis. Siquia and Honduran red points were proven to be genetically the same as and thus synonymous with nigrofasciata, and chetumalensis is up for review as to whether or not it is a spilurus locale. Panamensis got flipped from hypsophrys or neetroplus or something to cryptoheros, and finally put into its own genus, panamius. Hypsophrys now only consists of nicaraguensis, as nematopus also got its own genus, neetroplus.
I wish you luck finding everything. I believe wetspot happens to have the apistos and laetacara you're looking for, and aquabid always has someone with otapa helleri and macrostoma. Look out for rosaquatics or anyone with the same email as them on aquabid though, as they are a scam.
House of tropicals also has a very large supply of normal green swordtails and wild type mollies if you are interested.
