I've started to check miniatures against my Line Chart for scale assessment, so here's what I've found.

SGN101 1777 Concorde 12pdr 32 - no draught for comparison, probably close to SGN103 in "oversize".
SGN102 1782 Temeraire 36/24pdr Large 74 -
SGN103 1773 Amazon 12pdr 32 - about 3mm (8%) longer on waterline; proportions look like good match to NMM HIL0231 HMS Cleopatra. About 1/925 scale.
SGN104 1760 Bellona 32/18pdr Common 74 -

SGN105 1782 Hebe 18pdr 38 - about 3mm (7%) longer on waterline; proportions appear to generally fit NMM ZAZ4909 HMS Leda. About 1/939 scale.
SGN106 Ocean 120 -
SGN107 Swan 14-18 - no drawing available.
SGN108 1765 Victory 100 -

SGN201 1803 Victory 100 -
SGN202 1797 Humphreys Superfrigate -

SGN109 1765 Artesien 64 - 4mm (8%) oversize; generally matches ZAZ1339 Prothee. About 1/927 scale.
SGN110 Portland 50 - 2mm (4%) oversize; proportions fit ZAZ1718 Portland. About 1/958 scale.
SGN111 Meregildos 112 - LWL bang-on to NMM ZAZ0042 Salvador del Mundo, but sternboard much too vertical. Cannot rule out SdM being refitted with a more raked sternboard in RN service, though.
SGN112 Bahama 74 - dead match to NMM ZAZ0763 draught.

SGN113 Mahonesa 12pdr 34 -
SGN114 1764 Ardent 64 -
SGN115 1789 Tonnant 80 -
SGN116 - no drawing available