UK does have analogue laws applying to DMT, Psilocn, DET, αET and:
"any compound (not being a compound for the time being specified in sub-paragraph (a) above) structurally derived from tryptamine or from a ring-hydroxy tryptamine by substitution at the nitrogen atom of the sidechain with one or more alkyl substituents but no other substituent;"
AMT and 5-MeO-AMT have not alkyl substituents on the nitrogen atom therefore it technically is not covered.
Examples of analogues which would be covered.
DMT, DET, DPT, DiPT, DMiPT etc... all have alkyl chains or branched chains attached to the nitrogen
Interestingly Diallyltryptamine and 5-MeO-DALT is apparently uncovered buy this law because unsaturated allyl groups are not akyl, if you know what I mean.
There are a lot of Chinese, and some American, labs offering 5-MeO-Amt. SWIM is going to do a lot more research before SWIM even thinks about ordering any though.