Sometime before Enlil asked about Ecumenical councils, so I decided to write this little thingy, it's very basic, I can go a bit more in-depth if needed:
0. 49 A.D. — Jerusalem, concerned with distinctions between Christianity and Judaism, postulated that Christ was God incarnate, proclaimed circumcision unimportant, unimportant for our purposes. Recognized by all.
Nicene Ones:
1. 325 A.D. — I Nicene. Introduced the Symbol of Faith. Proclaimed Anathema to Arians, postulated that Christ had human body and soul. Recognized by all, except Arians
2. 381 A.D. — I Constantinople. One more time anathema to Arians; Formulated Trinity theory, postulated, that humanity of Christ doesn't stop him from being God, amended Symbol of Faith. Recognized by all, except Arians
3. 431 A.D. — Ephesus. Anathema to Nestorians, forbade any more amendments to the Symbol of Faith. Recognized by all, except Arians and Nestorians
4. 451 A.D. — Chalcedon. Anathema to Monophisits. Here's the catch, Myaphisits (Armenians, Copts, Ethiops) don't consider themselves Monophisits, but Orthdox and Catholics calls them that. Unrecognised by Myaphisits
5. 553 A.D. — II Constantinople. Mainly concerned with the role of Virgin Mary, but threw anathema to Platonians, Origen, Nestoians and Monophisits for good measure. Unimportant for our purposes
6. 680—681 A.D. — III Constinople. Anathema to Monothelits.
7. 787 A.D. — II Nicean - Anathema to Iconoclasts
8. 869—870 A.D. — IV Constantinople. Great Schism, Catholics proclaimed Ecumenical Patriarch Photius dethroned. Unrecognised by Orthodox, who had their own IV Constantinople with Anathema to Catholics.
I'll stop here. Now, there's so called "rogue" Councils, unrecognised by "mainstream" Orthodox/Catholic Churches:
341 A.D — Antioch - Proclaimed Arianism
355 A.D — Milan - Arians proclaimed Anathema to non-Arians
449 A.D — Ephesus - There was riots, fights and general debauchery, isn't recognized by anyone.
754 A.D. , 815 A.D. — First and Second Iconoclast. First proclaimed Iconoclasm, Second cancelled Anathema proclaimed by II Nicean Council.
Hope it helps.