Here are some links to Family Search IOM collections that don't have a search page but can be accessed from these pages:-
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Diocesan orders of court without petition, 1786-1918 (includes illegitimate births)
familysearch.org/search/catalog/2031034?availability=Family%20History%20Library
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Deeds and Conveyances, 1778-1910
familysearch.org/search/catalog/1911474?availability=Family%20History%20Library
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1841 Census (Andreas, Jurby, Lezayre, Michael)
familysearch.org/search/catalog/510700?availability=Family%20History%20Library
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1861 Census (Arbory, Andreas, Ballaugh, Braddan, Bride, Malew, Onchan) direct link
familysearch.org/ark:/61903/3:1:3QS7-89LP-C95B?i=637&cat=510730