I am trying to convert queries like below to types so that I won't have to use GTT:

insert into my_gtt_table_1
(house, lname, fname, MI, fullname, dob)
(select house, lname, fname, MI, fullname, dob 
 from (select 'REG' house, mbr_last_name lname, mbr_first_name fname, mbr_mi MI, 
       mbr_first_name || mbr_mi || mbr_last_name fullname, mbr_dob dob from 
       table_1 a, table_b
       where a.head = b.head and mbr_number = '01' and mbr_last_name = v_last_name) c

above is just a sample but complex queries are bigger than this.
the above is inside a stored procedure. So to avoid the gtt (my_gtt_table_1). I did the following:

create or replace type lname_row as object
    (
     house varchar2(30)
     lname varchar2(30),
     fname varchar2(30),
     MI char(1),
     fullname VARCHAR2(63),
     dob DATE
     )

create or replace type lname_exact as table of lname_row 

Now in the SP:

type lname_exact is table of <what_table_should_i_put_here>%rowtype;
tab_a_recs lname_exact;

In the above I am not sure what table to put as my query has nested subqueries.

query in the SP: (I am trying this for sample purpose to see if it works)

        select lname_row('',
                                '',
                                '',
                                '',
                                '',
                                '',
                                sysdate) bulk collect
          into tab_a_recs
        from table_1;

I am getting errors like : ORA-00913: too many values

I am really confused and stuck with this :(