Brilliant cites. Usually, when we speak about Siddhanta stating that Shreemati MahaLakshmi-Devi is non-distinct from Bhagavan Shree Vishnu, we cite "Shree Vishnu-Purana".
The following cites are from "Shree Jayakhya-Samhita" and "Shree Agni-Purana", the excerpt is from "Shree Kamala-Kalpa-Taru" - The Grantha about Shree Kamala-Vidya (10th MahaVidya).
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Vishnudut1926, september 2016, Moscow